Tricyclic triazolic compounds

1. A compound of formula (I)

wherein

R 1 represents an hydrogen atom; —COR 3 , —C(O)OR 3 , —C(O)NR 3 R 4 , —C═NR 3 , —CN, —OR 3 , —OC(O)R 3 , —S(O) n —R 3 , —NR 3 R 4 , —NR 3 C(O)R 4 , —NO 2 , —N═CR 3 R 4 , or an halogen atom;

a branched or unbranched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 ;

a substituted or unsubstituted cycloalkyl radical C 3-9 ; a branched or unbranched cycloalkyl-alkyl radical C 1-10 group in which either the alkyl group and/or the cycloalkyl group is optionally at least mono-substituted; a substituted or unsubstituted cycloalkyl C 3-9 or cycloalkylalkyl C 1-10 group in which the cycloalkyl group is condensed with another substituted or unsubstituted mono- or polycyclic ring system;

a substituted or unsubstituted aryl radical; a substituted or unsubstituted, branched or unbranched arylalkyl radical C 1-10 , at least mono-substituted benzhydryl group;

a substituted or unsubstituted heteroaryl radical; a substituted or unsubstituted, branched or unbranched heteroarylalkyl radical C 1-10 ; a substituted or unsubstituted non-aromatic heterocyclyl radical C 3-9 ; a substituted or unsubstituted, branched or unbranched heterocyclylalkyl radical C 3-9 ;

a substituted or unsubstituted heterocyclyl C 3-9 or heterocycloalkyl radical C 1-10 group in which the heterocyclyl group is condensed with another substituted or unsubstituted mono- or polycyclic ring system;

R 2 represents an hydrogen atom; —COR 3 , —C(O)OR 3 , —C(O)NR 3 R 4 , —C═NR 3 , —CN, —OR 3 , —OC(O)R 3 , —S(O) n —R 3 , —NR 3 R 4 , —NR 3 C(O)R 4 , —NO 2 , —N═CR 3 R 4 , or an halogen atom;

a branched or unbranched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 ;

a substituted or unsubstituted cycloalkyl radical C 3-9 ; a branched or unbranched cycloalkyl-alkyl radical C 1-10 group in which either the alkyl group and/or the cycloalkyl group is optionally at least mono-substituted; a substituted or unsubstituted cycloalkyl C 3-9 or cycloalkylalkyl C 1-10 radical group in which the cycloalkyl group is condensed with another substituted or unsubstituted mono- or polycyclic ring system;

a substituted or unsubstituted aryl radical; a substituted or unsubstituted, branched or unbranched arylalkyl radical C 1-10 , at least mono-substituted benzhydryl group;

a substituted or unsubstituted heteroaryl radical; a substituted or unsubstituted, branched or unbranched heteroarylalkyl radical C 1-10 ; a substituted or unsubstituted non-aromatic heterocyclyl radical C 3-9 ; a substituted or unsubstituted, branched or unbranched heterocyclylalkyl radical C 3-9 ;

a substituted or unsubstituted heterocyclyl C 3-9 or heterocycloalkyl C 1-10 radical group in which the heterocyclyl group is condensed with another substituted or unsubstituted mono- or polycyclic ring system;

R 3 and R 4 are each independently selected from hydrogen or halogen;

a branched or unbranched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 ;

a substituted or unsubstituted cycloalkyl radical C 3-9 ; branched or unbranched cycloalkyl-alkyl radical C 1-10 group in which either the alkyl group and/or the cycloalkyl group is optionally at least mono-substituted;

a substituted or unsubstituted aryl radical; a substituted or unsubstituted arylalkyl radical C 1-10 an optionally, at least mono-substituted benzhydryl group;

a substituted or unsubstituted heteroaryl radical; a substituted or unsubstituted, branched or unbranched heteroarylalkyl radical C 1-10 ; a substituted or unsubstituted non-aromatic heterocyclyl radical C 3-9 ; a substituted or unsubstituted, branched or unbranched heterocyclylalkyl radical C 3-9 ;

a substituted or unsubstituted heterocyclyl C 3-9 or heterocycloalkyl C 1-10 radical group in which the heterocyclyl group is condensed with another substituted or unsubstituted mono- or polycyclic ring system;

wherein the substituents for the alkyl, cycloalkyl, aryl and heteroaryl radicals are independently selected from the group consisting of C 1-4 alkyl, linear or branched C 1-6 alkoxy, F, CI, I, Br, CF 3 , CH 2 F, CHF 2 , CN, OH, SH, NH 2 , oxo, (C═O)R′, SR′, SOR′, SO 2 R′, NHR′, NR′R″ whereby R′ and optionally R″ for each substituent independently represents a linear or branched C 1-6 -alkyl group; and

wherein the substituents for the arylalkyl radical is selected from the group consisting of F, CI, Br, I, NH 2 , SH, OH, SO 2 , CF 3 , carboxy, amido, cyano, carbamyl, nitro, phenyl, benzyl, —SO 2 NH 2 , C 1-6 alkyl and C 1-6 -alkoxy; and

n is 0, 1 or 2;

or a pharmaceutically acceptable salt or isomer thereof.

2. A compound according to claim 1 where R 1 is an hydrogen atom; —COR 3 , —C(O)OR 3 , —C(O)NR 3 R 4 , —C═NR 3 , —CN, —OR 3 , —OC(O)R 3 , —S(O) n —R 3 , —NR 3 R 4 , —NR 3 C(O)R 4 , —N═CR 3 R 4 , an halogen atom;

a branched or unbranched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 ; a substituted or unsubstituted cycloalkyl radical C 3-9 ; a substituted or unsubstituted aryl radical; a substituted or unsubstituted, branched or unbranched arylalkyl radical C 1-10 , at least mono-substituted benzhydryl group;

a substituted or unsubstituted heteroaryl radical; a substituted or unsubstituted, branched or unbranched heteroarylalkyl radical C 1-10 ; a substituted or unsubstituted non-aromatic heterocyclyl radical C 3-9 ; a substituted or unsubstituted, branched or unbranched heterocyclylalkyl radical C 3-9 ; or a pharmaceutically acceptable salt or isomer thereof.

3. A compound according to claim 1 where R 2 is an hydrogen atom or —COR 3 , —C(O)OR 3 , —C(O)NR 3 R 4 , —C═NR 3 , —CN, —OR 3 , —OC(O)R 3 , —S(O) n —R 3 , —NR 3 R 4 , —NR 3 C(O)R 4 , —NO 2 , —N═CR 3 R 4 , an halogen atom; a substituted or unsubstituted cycloalkyl radical C 3-9 ; a substituted or unsubstituted aryl radical; a substituted or unsubstituted arylalkyl radical C 1-10 ; a substituted or unsubstituted heteroaryl radical; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted aliphatic radical C 1-10 ; an unsubstituted heteroarylalkyl radical C 1-10 or a pharmaceutically acceptable salt or isomer thereof.

4. A compound according to claim 1 where R 3 and R 4 are each independently selected from hydrogen or halogen; a substituted or unsubstituted cycloalkyl radical C 3-9 ; a substituted or unsubstituted aryl radical; a substituted or unsubstituted arylalkyl radical C 1-10 ; a substituted or unsubstituted heteroaryl radical; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted aliphatic radical C 1-10 ; an unsubstituted heteroarylalkyl radical C 1-10 or a pharmaceutically acceptable salt or isomer thereof.

5. A compound according to claim 1 where R 1 is an hydrogen atom; an halogen atom; —COR 3 ; —C(O)OR 3 ; —C(O)NR 3 R 4 ; —S(O) n —R 3 ; a substituted or unsubstituted cycloalkyl radical C 3-9 ; a substituted or unsubstituted aryl radical; a substituted or unsubstituted arylalkyl radical C 1-10 ; a substituted or unsubstituted heteroaryl radical; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted aliphatic radical C 1-10 ;

R 2 hydrogen atom or halogen; a substituted or unsubstituted cycloalkyl radical C 3-9 ; a substituted or unsubstituted aryl radical; a substituted or unsubstituted heteroaryl radical; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 ; and

R 3 and R 4 are each independently selected from hydrogen or halogen; a substituted or unsubstituted aryl radical; a substituted or unsubstituted heteroaryl radical; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 or a substituted; an unsubstituted alkylaryl C 1-10 or heteroarylalkyl radical C 1-10 or a pharmaceutically acceptable salt or isomer thereof.

6. A compound according to claim 1 where R 1 is an hydrogen atom; a halogen; —COR 3 ; —C(O)OR 3 ; —C(O)NR 3 R 4 ; —S(O) n —R 3 ; a substituted or unsubstituted cycloalkyl radical C 3-9 ; a substituted or unsubstituted aryl radical; a substituted or unsubstituted arylalkyl radical C 1-10 ; a substituted or unsubstituted heteroaryl radical; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted aliphatic radical C 1-10 ;

R 2 is an hydrogen atom or an halogen atom; a substituted or unsubstituted aryl radical; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 ; and

R 3 and R 4 are each independently selected from hydrogen or halogen; an unbranched or branched, saturated or unsaturated, optionally at least mono-substituted aliphatic radical C 1-10 ; an unsubstituted alkylaryl or heteroarylalkyl radical C 1-10 or a pharmaceutically acceptable salt or isomer thereof.

7. A pharmaceutical composition comprising a compound according to claim 1 and a pharmaceutically acceptable carrier.

8. A method for the treatment of a sigma receptor mediated disease or condition is pain or for the treatment of a sigma receptor mediated disease or condition wherein said disease or condition is selected from diarrhea, lipoprotein disorders, hyperlipidemia, hypertriglyceridemia, hypercholesterolemia, obesity, migraine, hypertension, arrhythmia, ulcer, glaucoma, demyelinating diseases, addiction to drugs and chemical substances, tardive diskinesia, ischemic stroke, epilepsy, stroke, and stress, comprising administering to a patient in need of such treatment a therapeutically effective amount of a compound according to claim 1 .

9. A method according to claim 8 wherein the disease or condition is selected from diarrhea, lipoprotein disorders, hyperlipidemia, hypertriglyceridemia, hypercholesterolemia, obesity, migraine, arthritis, hypertension, arrhythmia, ulcer, glaucoma, learning, memory and attention deficits, cognition disorders, neurodegenerative diseases, demyelinating diseases, addiction to drugs and chemical substances, tardive dyskinesia, ischemic stroke, epilepsy, stroke, stress.

10. A method according to claim 8 wherein the disease or condition is pain.

11. A process for the preparation of a compound of formula (Ia):

comprising the heating of a compound of formula (II):

in toluene or xylene to a temperature of 100-130° C.,

where R 2 has the meaning as in claim 1 and R 5 is a hydrogen, a halogen or an C 1 -C 10 alkyloxy.

12. A process for the preparation of a compound of formula (Ib):

comprising the hydrogenolysis of compound (Ia):

wherein R 2 has the same meanings as in claim 1 , and R 5 is a hydrogen, a halogen or a C 1 -C 10 alkoxy in the presence of hydrogen and a catalyst in an organic solvent.

13. A process for the preparation of compound of formula (Ie):

comprising the reaction between a compound of formula (Ib):

with an isocyanate of formula (III):

R 3 —N═C═O  (III)

in an organic solvent and optionally in the presence of a supported amine, and

wherein R 2 and R 3 have the meanings as in claim 1 .

14. A process for the preparation of a compound of formula (I):

comprising the reaction between a compound of formula (Ib):

with a compound of formula (IV):

R 1 —X  (IV)

in an organic solvent and optionally in the presence of a base and/or a catalyst,

wherein R 1 and R 2 have the meanings as in claim 1 and X is a halogen.

15. A process according to claim 14 where compound (IV) may be represented by formula (IV′):

where R 3 is selected from hydrogen

a branched or unbranched, saturated or unsaturated, optionally at least mono-substituted, aliphatic radical C 1-10 ;

a substituted or unsubstituted cycloalkyl radical C 3-9 ; branched or unbranched cycloalkyl-alkyl radical C 1-10 group in which either the alkyl group and/or the cycloalkyl group is optionally at least mono-substituted;

a substituted or unsubstituted aryl radical; a substituted or unsubstituted arylalkyl radical C 1-10 an optionally, at least mono-substituted benzhydryl group;

a substituted or unsubstituted heteroaryl radical; a substituted or unsubstituted, branched or unbranched heteroarylalkyl radical C 1-10 ; substituted or unsubstituted non-aromatic heterocyclyl radical C 3-9 ; a substituted or unsubstituted, branched or unbranched heterocyclylalkyl radical C 3-9 ;

a substituted or unsubstituted heterocyclyl C 3-9 or heterocycloalkyl C 1-10 radical group in which the heterocyclyl group is condensed with another substituted or unsubstituted mono- or polycyclic ring system,

X is as defined in claim 14 and G represents —SO 2 —, —CO—, or —COO—.

16. A process for the preparation of enantiomerically pure compound (I) comprising:

a) the reaction of compound of formula (XII) or its enantiomer:

with a compound of formula (Z) in an organic solvent:

b) heating the resulting compound of formula (XIII), or its enantiomer, in xylene or toluene:

c) hydrolyzing the resulting compound of formula (If′), or its enantiomer, in an acidic medium:

d) reacting the resulting compound with compound (IV) as defined in claim 14 in an organic solvent and optionally in the presence of a base and a catalyst, or with compound (III) in an organic solvent and optionally in the presence of a supported amine, and wherein R 1 , R 2 and R 3 have the meanings as in claim 1 and X is a halogen.

17. A pharmaceutical composition which comprises a compound as defined in claim 1 or a pharmaceutically acceptable salt or isomer thereof, and at least a pharmaceutically acceptable carrier, additive, adjuvant or vehicle.

18. A method according to claim 9 wherein the drugs and chemical substances are selected from cocaine, amphetamine, ethanol and nicotine.

19. A method according to claim 8 wherein the disease is neuropathic pain or inflammatory pain.

20. A method according to claim 8 wherein the disease is a pain condition involving allodynia or hyperalgesia or both.

21. A compound selected from the group consisting of:

[1] (5a,8a-trans)-7-(4-methoxybenzyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[2] (5a,8a-trans)-7-(4-methoxybenzyl)-3-methyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[3] (5a,8a-trans)-3-ethyl-7-(4-methoxybenzyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[4] (5a,8a-trans)-7-benzyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[5] (5a,8a-trans)-7-benzyl-3-methyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[6] (5a,8a-trans)-7-benzyl-3-(4-(trifluoromethyl)phenyl)-4,5a,6,7,8,8a-hexa hydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[7] (5a,8a-trans)-7-benzyl-3-(2-fluorophenyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[8] (5a,8a-trans)-7-benzyl-3-ethyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[9] (5a,8a-trans)-7-benzyl-3-(4-chlorophenyl)-4,5a,6,7,8,8a-hexahydropyrrolo [3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[10] (5a,8a-trans)-7-benzyl-3-(3-fluorophenyl)-4,5a,6,7,8,8a-hexahydropyrrol[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[11] (5a,8a-trans)-7-benzyl-3-phenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[12] (5a,8a-trans)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[13] (5a,8a-trans)-3-phenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[14] (5a,8a-trans)-7-(methylsulfonyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[15] (5a,8a-trans)-7-(4-bromophenylsulfonyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[16] (5a,8a-trans)-7-(phenylsulfonyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[17] (5a,8a-trans)-7-(2-fluorophenylsulfonyl)-4,5a,6,7,8,8a-hexahydropyrrolo [3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[18] (5a,8a-trans)-7-(4-fluorophenylsulfonyl)-4,5a,6,7,8,8a-hexahydropyrrolo [3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[19] (5a,8a)-7-(methylsulfonyl)-3-phenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[20] (5a,8a-trans)-7-(4-fluorophenylsulfonyl)-3-phenyl-4,5a,6,7,8,8a-hexa hydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[21] (2-fluorophenyl)((5a,8a-trans)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)methanone,

[22] phenyl((5a,8a-trans)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)methanone,

[23] (2,4-dichlorophenyl)((5a,8a-trans)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)methanone,

[24] 3-phenyl-1-((5a,8a-trans)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)propan-1-one,

[25] 1-((5a,8a-trans)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)butan-1-one,

[26] ((5a,8a-trans)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)(thiophen-2-yl)methanone,

[27] phenyl((5a,8a-trans)-3-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)methanone,

[28] 3-phenyl-1-((5a,8a-trans)-3-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)propan-1-one,

[29] 1-((5a,8a-trans)-3-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)butan-1-one,

[30] ((5a,8a-trans)-3-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo [1,5-d][1,4]oxazin-7(4H)-yl)(thiophen-2-yl)methanone,

[31] (5a,8a-trans)-N-butyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7(4H)-carboxamide,

[32] (5a,8a-trans)-N-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo [1,5-d][1,4]oxazine-7(4H)-carboxamide,

[33] (5a,8a-trans)-N,3-diphenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3] triazolo[1,5-d][1,4]oxazine-7(4H)-carboxamide,

[34] (5a,8a-trans)-benzyl 3-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7(4H)-carboxylate,

[35] (5a,8a-trans)-7-(pyrimidin-2-yl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[36] (5a,8a-trans)-7-ethyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[37] (5a,8a-trans)-7-pentyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[38] (5a,8a-trans)-7-(4-fluorobenzyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[39] (5a,8a-trans)-7-(pyridin-2-ylmethyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[40] (5a,8a-trans)-3-phenyl-7-(pyrimidin-2-yl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[41] (5a,8a-trans)-7-pentyl-3-phenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[42] (5a,8a-trans)-7-phenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[43] (5a,8a-trans)-7-(4-chlorophenyl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[44] (5a,8a-trans)-7-(pyridin-2-yl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[45] (5a,8a-trans)-3,7-diphenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[46] (5a,8a-trans)-7-(4,6-dichloropyrimidin-2-yl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[47] (5a,8a-trans)-7-(4,6-dichloropyrimidin-2-yl)-3-phenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[48] (5a,8a-trans)-7-(4-chloropyrimidin-2-yl)-3-phenyl-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[49] (5a,8a-trans)-7-(4-chloropyrimidin-2-yl)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine,

[50] 2-((5a,8a-trans)-5a,6,7,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)pyrimidin-4-amine,

[51] 2-((5a,8a-trans)-3-phenyl-5a,6,7,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)pyrimidin-4-amine,

[52] 6-((5a,8a-trans)-3-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazin-7(4H)-yl)-1,3,5-triazine-2,4-diamine,

[53] (5aS,8aS)-tert-butyl 5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7(4H)-carboxylate,

[54] (5aS,8aS)-tert-butyl 3-methyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7(4H)-carboxylate,

[55] (5aS,8aS)-tert-butyl 3-phenyl-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7(4H)-carboxylate,

[56] (5aS,8aS)-tert-butyl 3-(3-fluorophenyl)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7(4H)-carboxylate,

[57] (5aS,8aS)-tert-butyl 3-(4-(trifluoromethyl)phenyl)-5a,6,8,8a-tetrahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7(4H)-carboxylate, and

[58] (5aS,8S)-4,5a,6,7,8,8a-hexahydropyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine.