US 6288104B1
· Gericke et al.
· 2001
[cited by applicant]
US 8344001B2
· Hohlweg et al.
· 2013
[cited by applicant]
US 8552051B2
· Harvey et al.
· 2013
[cited by applicant]
US 8865723B2
· Gurney et al.
· 2014
[cited by applicant]
US 8980338B2
· Gericke et al.
· 2015
[cited by applicant]
US 9220708B2
· Ruecroft et al.
· 2015
[cited by applicant]
US 9381220B2
· Gericke et al.
· 2016
[cited by applicant]
US 20040044029A1
· Dart et al.
· 2004
[cited by applicant]
US 20050239841A1
· Browning et al.
· 2005
[cited by applicant]
US 20240400508A1
· Hooker
· 2024
[cited by applicant]
CN 102000069A
· 2011
[cited by applicant]
CN 102153501A
· 2011
[cited by applicant]
CN 113072576A
· 2021
[cited by applicant]
EP 1671651A1
· 2006
[cited by applicant]
WO WO1997046234A1
· 1997
[cited by applicant]
WO WO200000184A2
· 2000
[cited by applicant]
WO WO2005051381A1
· 2005
[cited by applicant]
WO WO2006050057A2
· 2006
[cited by applicant]
WO WO2008019106A1
· 2008
[cited by applicant]
WO WO2010106494A1
· 2010
[cited by applicant]
WO WO2010106495A1
· 2010
[cited by applicant]
WO WO2012101058A1
· 2012
[cited by applicant]
WO WO2014155351A1
· 2014
[cited by applicant]
WO WO2015048590A1
· 2015
[cited by applicant]
WO WO2016049595A1
· 2016
[cited by applicant]
WO WO2016157045A1
· 2016
[cited by applicant]
WO WO2016203347A1
· 2016
[cited by applicant]
WO WO2019021196A1
· 2019
[cited by applicant]
WO WO2019021196A9
· 2019
[cited by applicant]
WO WO2019194866A1
· 2019
[cited by applicant]
WO WO2021086345A1
· 2021
[cited by applicant]
WO WO2022140417A1
· 2022
[cited by applicant]
WO WO2022187725A1
· 2022
[cited by applicant]
WO WO2023004428A1
· 2023
[cited by applicant]
WO WO2023069455A1
· 2023
[cited by applicant]
WO WO2023076533A1
· 2023
[cited by applicant]
WO WO2023076534A1
· 2023
[cited by applicant]
WO WO2023076547A1
· 2023
[cited by applicant]
WO WO2023076586A1
· 2023
[cited by applicant]
WO WO2023166304A1
· 2023
[cited by applicant]
WO WO2023187421A1
· 2023
[cited by applicant]
WO WO2023225773A1
· 2023
[cited by applicant]
WO WO2023230049A1
· 2023
[cited by applicant]
WO WO2024015559A2
· 2024
[cited by applicant]
WO WO2024026059A2
· 2024
[cited by applicant]
WO WO2024074831A1
· 2024
[cited by applicant]
WO WO2024102461A1
· 2024
[cited by applicant]
WO WO2024102991A1
· 2024
[cited by applicant]
International Search Report and Written Opinion for International Application No. PCT/US23/37131 dated Feb. 9, 2024.
[cited by applicant]
Invitation to Pay Additional Fees for International Application No. PCT/US23/37131 dated Dec. 27, 2023.
[cited by applicant]
Capps et al., “Sceletium Alkaloids. Part 7.1 Structure and Absolute Stereochemistry of (—)—Mesembrane and 3′—Methoxy-4′-O-methyl joubertiamine, Two Minor Bases from
[cited by applicant]
Carpenter et al., “The effects of
[cited by applicant]
Coetzee et al., “High-mesembrine Sceletium extract (Trimesemine™) is a monoamine releasing agent, rather than only a selective serotonin reuptake inhibitor,” Journal of Ethnopharmacology 177 (2016): 111-116.
[cited by applicant]
Faber et al., “Variabilities in alkaloid concentration of
[cited by applicant]
Gan et al., “Pyrone Diels—Alder Routes to Indolines and Hydroindolines: Syntheses of Gracilamine, Mesembrine, and D7-Mesembrenone,” Angewandte Chemie 128 (2016): 3689-3694.
[cited by applicant]
Gericke, “An acute dose-ranging evaluation of the antidepressant properties of Sceletium tortuosum (Zembrin) versus escitalopram in the Flinders Sensitive Line rat,” Journal of Ethnopharmacology 284 (2022): 114550 (9 pa…
[cited by applicant]
Gericke, “Sceletium tortuosum-derived mesembrine significantly contributes to the anxiolytic effect of Zembrin, but its anti-depressant effect may require synergy of multiple plant constituents,” Journal of Ethnopharmac…
[cited by applicant]
Jeffs et al., “Structure of the Mesembranols and the Absolute Configuration of Mesembrine and Related Alkaloids,” Journal of the American Chemical Society 91.14 (1969): 3831-3839.
[cited by applicant]
Konoura et al., “Transformation of naltrexone into mesembrane and investigation of the binding properties of its intermediate derivatives to opioid receptors,” Bioorganic and Medicinal Chemistry 23 (2015): 439-448.
[cited by applicant]
Luo et al., “Asymmetric total synthesis and antidepressant activity of (?)-sila-mesembranol bearing a silicon stereocenter,” Organic Chemistry Frontiers 8 (2021): 5941-5947.
[cited by applicant]
Makolo et al., “Mesembrine: The archetypal psycho-active Sceletium alkaloid,” Phytochemistry 166 (2019): 112061 (7 pages).
[cited by applicant]
Mori et al., “Total Syntheses of (—)-Mesembrane and (—)-Mesembrine via Palladium-Catalyzed Enantioselective Allylic Substitution and Zirconium-Promoted Cyclization,” Journal of Organic Chemistry 62 (1997): 3263-3270.
[cited by applicant]
Mullard, “FDA approves first deuterated drug,” Nature Reviews Drug Discovery 16 (2017): 305.
[cited by applicant]
Popelak et al., “The Mesembrine Alkaloids,” Chapter 11 in The Alkaloids: Chemistry and Physiology, Academic Press, 1968, pp. 467-482.
[cited by applicant]
Rajagopalan, “A New Synthesis of (plus-minus)-Mesembrine Involving the Intramolecular Nucleophilic Attack of an Allyl Anion on a Carbonyl Fuction of an Imide,” Tetrahedron Letters 31.11 (1997): 1893-1894.
[cited by applicant]
Reddy et al., “Skeletons in the closet? Using a bibliometric lens to visualise phytochemical and pharmacological activities linked to Sceletium, a mood enhancer,” Frontiers in Plant Science 15:1268101 (32 pages).
[cited by applicant]
Schell, “Sceletium tortuosum and Mesembrine: A Potential Alternative Treatment for Depression,” Thesis, Scripps University, Paper 375, 2014 (46 pages).
[cited by applicant]
Shikanga et al., “Isolation of Sceletium alkaloids by high-speed countercurrent chromatography,” Phytochemistry Letters 4 (2011): 190-193.
[cited by applicant]
Wang et al., “Palladium-Catalyzed Asymmetric Direct Intermolecular Allylation of ?? Aryl Cyclic Vinylogous Esters: Divergent Synthesis of (+)-Oxomaritidine and (?)-Mesembrine,” ACS Organic Letters 23 (2021): 920-924.
[cited by applicant]
Wen et al., “Sceletium Tortuosum: Effects on Central Nervous System and Related Disease,” Journal of Pharmaceutical and Biomedical Sciences 10.6 (2020): 151-160.
[cited by applicant]
Zhao et al., “1H-NMR and UPLC-MS metabolomics: Functional tools for exploring chemotypic variation in Sceletium tortuosum from two provinces in South Africa,” Phytocheminstry 152 (2018): 191-203.
[cited by applicant]
Baillie et al., “Therapeutic targeting of 3′,5′-cyclic nucleotide phosphodiesterases: inhibition and beyond,” Nature Reviews Drug Discovery, 18: 770-796 (2019).
[cited by applicant]
Berkov et al., “GC-MS analysis of Amaryllidaceae and Sceletium-type alkaloids in bioactive fractions from Narcissus cv. Hawera” Rapid Commun Mass Spectrom, 35:e9116 (2021).
[cited by applicant]
CAS Registry Accession No. RN 109645-39-8, Entered STN: Aug. 8, 1987.
[cited by applicant]
CAS Registry Accession No. RN 41 759-66-4, Entered STN: Nov. 16, 1984.
[cited by applicant]
CAS Registry Accession No. RN 41855-11-2, Entered STN: Nov. 16, 1984.
[cited by applicant]
Chiu et al., “Proof-of-Concept Randomized Controlled Study of Cognition Effects of the Proprietary Extract Sceletium tortuosum (Zembrin) Targeting Phosphodiesterase-4 in Cognitively Healthy Subjects: Implications for Al…
[cited by applicant]
Dimpfel et al., “Effect of Zembrin and four of its alkaloid constituents on electric excitability of the rat hippocampus,” Journal of Ethnopharmacology, 223: pp. 135-141 (2018).
[cited by applicant]
Dimpfel et al., “Electropharmacogram of Sceletium tortuosum extract based on spectral local field power in conscious freely moving rats,” Journal of Ethnopharmacology, 177: 140-147 (2016).
[cited by applicant]
Dimpfel et al., “Psychophysiological Effects of Zembrin® Using Quantitative EEG Source Density in Combination with Eye-Tracking in 60 Healthy Subjects. A Double-Blind, Randomized, Placebo-Controlled, 3-Armed Study with …
[cited by applicant]
Fountain., “The Effects of Sceletium tortuosum in the Chick Anxiety-Depression Model,” Thesis for the University of Mississippi: 31 pages (2017).
[cited by applicant]
Fujita et al., “Quantification of brain phosphodiesterase 4 in rat with (R)-[11C]Rolipram-PET,” Neurolmage, 26: 1201-1210 (2005).
[cited by applicant]
Gericke et al., “Sceletium—A review update,” Journal of Ethnopharmacology, 119: 653-663 (2008).
[cited by applicant]
Gericke, “Kabbo's! Kwai?: the past, present and possible future of kanna”, The ethnopharmacological search for psychoactive drugs: 122-150 (2018).
[cited by applicant]
Harvey et al., “Pharmacological actions of the South African medicinal and functional food plant Sceletium tortuosum and its principal alkaloids,” Journal of Ethnopharmacology, 137: pp. 1124-1129 (2011).
[cited by applicant]
Hoffman et al., “Ergogenic Effects of 8 Days of Sceletium Tortuosum Supplementation on Mood, Visual Tracking, and Reaction in Recreationally Trained Men and Women,” The Journal of Strength and Conditioning Research, 34(…
[cited by applicant]
International Search Report & Written Opinion for International Application No. PCT/US2023/079358 dated Mar. 14, 2024.
[cited by applicant]
International Search Report and Written Opinion for Application No. PCT/US18/31505 dated Jul. 23, 2018.
[cited by applicant]
International Search Report and Written Opinion for Application No. PCT/US22/48128 dated Feb. 7, 2023.
[cited by applicant]
International Search Report and Written Opinion for International Application No. PCT/US22/48152 dated Mar. 1, 2023.
[cited by applicant]
International Search Report and Written Opinion for International Application No. PCT/US22/48206 dated Mar. 29, 2023.
[cited by applicant]
Invitation to Pay Additonal Fees for Application No. PCT/US22/48152 dated Jan. 3, 2023.
[cited by applicant]
Invitation to Pay Additonal Fees for Application No. PCT/US22/48206 dated Jan. 3, 2023.
[cited by applicant]
Jeffs et al., “Late stages in the biosynthesis of mesembrine: sceletenone as a precursor to the cis-3a-(3, 4-dimethoxyphenyl) octahydroindole alkaloids”,
[cited by applicant]
Jeffs et al., “Sceletium alkaloids. Structures of five new bases from Sceletium namaquens”,
[cited by applicant]
Jeffs, et al. ‘Sceletium Alkaloids in The Alkaloids’, Chapter 1, The Alkaloids, vol. XIX, 1981, Academic Press, Inc., pp. 1-80.
[cited by applicant]
Johnson et al., “An evolutionary analysis of cAMP-specific Phosphodiesterase 4 alternative splicing,” BMC Evolutionary Biology, 10: Article 247 pp. 1-14 (2010).
[cited by applicant]
Krstenansky, “Mesembrine alkaloids: Review of their occurrence, chemistry, and pharmacology,” Journal of Ethnopharmacology, 195: 10-19 (2017).
[cited by applicant]
Loria et al., “Effects of Sceletium tortuosum in rats,” Journal of Ethnopharmacology, 155: pp. 731-735 (2014).
[cited by applicant]
Luo et al., “A network pharmacology-based approach to explore the therapeutic potential of Sceletium tortuosum in the treatment of neurodegenerative disorders,” PLOS ONE, 17(8): 21 pages (2022).
[cited by applicant]
Manda et al., “Quantification of mesembrine and mesembrenone in mouse plasma using UHPLC-QToF-MS: Application to a pharmacokinetic study,” Biomedical Chromatography, 31(3): Article e3815 pp. 1-7 (2017).
[cited by applicant]
Manganyi et al., “A Chewable Cure “Kanna”: Biological and Pharmaceutical Properties of Sceletium tortuosum,” Molecules, 26: Article 2557 pp. 1-15 (2021).
[cited by applicant]
Maphanga et al., “
[cited by applicant]
Martin et al., “Mass spectra of Sceletium alkaloids” Organic Mass Spectrometry, 11(1):1-19 (1976).
[cited by applicant]
Meyer et al., “GC-MS, LC-MSn, LC-high resolution-MSn, and NMR studies on the metabolism and toxicological detection of mesembrine and mesembrenone, the main alkaloids of the legal high “Kanna” isolated from Sceletium to…
[cited by applicant]
Murbach et al., “A toxicological safety assessment of a standardized extract of Sceletium tortuosum (Zembrin) in rats,” Food and Chemical Toxicology, 74: pp. 190-199 (2014).
[cited by applicant]
Nell et al., “A Randomized, Double-Blind, Parallel-Group, Placebo-Controlled Trial of Extract Sceletium tortuosum (Zembrin) in Healthy Adults,” The Journal of Alternative and Complementary Medicine, 19(11): 898-904 (201…
[cited by applicant]
Oh-Ishi, et al. ‘Synthesis of dl-Mesembrine and Its Trans Isomer’, Tetrahedron Letters, 1968, vol. 52, pp. 5445-5448.
[cited by applicant]
Olatunji et al., “Sceletium tortuosum: A review on its phytochemistry, pharmacokinetics, biological and clinical activities,” Journal of Ethnopharmacology, 280: Article 114476 pp. 1-15 (2021).
[cited by applicant]
Olatunji et al., “Sceletium tortuosum: A review on its phytochemistry, pharmacokinetics, biological, pre-clinical and clinical activities,” Journal of Ethnopharmacology, 287 (2022) Article 114711, pp. 1-16.
[cited by applicant]
Pansare, et al. ‘Stereoselective Synthesis of 3-Aryloctahydroindoles and Application in a Formal Synthesis of (-)-Pancracine’, Organic Letters, 2010, vol. 12(3), pp. 556-559.
[cited by applicant]
Parrott et al., “Incorporation and controlled release of silyl ether prodrugs from PRINT nanoparticles”, Journal of the American Chemical Society 134(18): 7978-7982 (2012).
[cited by applicant]
Patnala et al., “Medicinal use of Sceletium: Characterization of Phytochemical Components of Sceletium Plant Species using HPLC with UV and Electrospray Ionization—Tandem Mass Spectroscopy,” J Pharm Pharm Sci, 18(4): 41…
[cited by applicant]
Patnala, “Pharmaceutical Analysis and Quality of Complementary Medicines: Sceletium and Associated Products,” Sceletium Review Thesis, Rhodes University: 251 pages (2007).
[cited by applicant]
Perez et al., “Evaluating prodrug strategies for esterase-triggered release of alcohols” Chem Med Chem, 8(10): 1662-1667 (2013).
[cited by applicant]
Plenge et al., “The antidepressant drug vilazodone is an allosteric inhibitor of the serotonin transporter,” Nature Communications, 12: Article No. 5063 pp. 1-12 (2021).
[cited by applicant]
Pubchem 23088482.
[cited by applicant]
Pubchem CID 499683 (2005).
[cited by applicant]
PubChem Compound Summary for CID 499683, National Center for Biotechnology Information. Retrieved Mar. 8, 2023 from https://pubchem.ncbi.nlm.nih.gov/compound/499683 (2023).
[cited by applicant]
PubChem SID 11415, “Mesembrine; 24880-43-1; C09224” Modify Date: Aug. 2, 2011 [retrieved on Mar. 21, 2024].
[cited by applicant]
PubChem SID 797869, “3a-(3,4-Dimethoxyphenyl)-1-methyloctahydro-6H-indol-6-one hydrochloride” Modify Date: Jan. 21, 2015 [retrieved on Jan. 24, 2024].
[cited by applicant]
Reay et al., “Sceletium tortuosum (Zembrin®) ameliorates experimentally induced anxiety in healthy volunteers,” Human Psychopharmacology: Clinical & Experimental, 35(6): 1-7 (2020).
[cited by applicant]
Reyes-Irisarri et al., “Differential distribution of PDE4B splice variant mRNAs in rat brain and the effects of systemic administration of LPS in their expression,” Synapse, 62: 74-79 (2008).
[cited by applicant]
Richter et al., “PDE4 as a target for cognition enhancement,” Expert Opin Ther Targets, 17(9): pp. 1011-1027 (2013).
[cited by applicant]
Roscher et al., “Forensic analysis of mesembrine alkaloids in S celetium tortuosum by nonaqueous capillary electrophoresis mass spectrometry”,
[cited by applicant]
Said et al., “Antidepressant potential of Mesembryanthemum cordifolium roots assisted by metabolomic analysis and virtual screening,” Natural Product Research: pp. 1-6 (2020).
[cited by applicant]
Scherman et al., “[3H]Dihydrotetrabenazine, a New In Vitro Monoaminergic Probe for Human Brain,” Journal of Neurochemistry, 50(4): 1131-1136 (1988).
[cited by applicant]
Singh, “Utilization of nanotechnology for formulation development, optimization and evaluation of brain targeted drug delivery system,” Thesis submitted to Lovely Professional University: 59 pages (2015).
[cited by applicant]
Spina, “PDE4 inhibitors: current status,” British Journal of Pharmacology, 155: 308-315 (2008).
[cited by applicant]
Takano et al., “A Nonhuman Primate PET Study: Measurement of Brain PDE4 Occupancy by Roflumilast Using (R)-[11C]Rolipram,” Molecular Imaging and Biology, 20: 615-622 (2018).
[cited by applicant]
Terburg et al., “Acute Effects of Sceletium tortuosum (Zembrin), a Dual 5-HT Reuptake and PDE4 Inhibitor, in the Human Amygdala and its Connection to the Hypothalamus,” Neuropsychopharmacology, 38: 2708-2716 (2013).
[cited by applicant]
Tibbo et al., “Phosphodiesterase 4B: Master Regulator of Brain Signaling,” Cells, 9(5): Article 1254 pp. 1-17 (2020).
[cited by applicant]
Van der Aart et al., “Quantification of human brain PDE4 occupancy by GSK356278: A [11C](R)-rolipram PET study,” Journal of Cerebral Blood Flow & Metabolism, 38(11): 2033-2040 (2018).
[cited by applicant]
Viljoen et al., “Formulation of Medicated Chewing Gum Containing Sceletium tortuosum and Process Optimization Utilizing the SeDeM Diagram Expert System,” AAPS PharmSciTech, 22: Article No. 102 pp. 1-15 (2021).
[cited by applicant]
Wakabayashi et al., “Monkey, rat, and first in human evaluation of [18F]PF-06445974, a PET radioligand that preferentially labels phosphodiesterase 4B,” Journal of Nuclear Medicine, 62(Supplement 1): Abstract 1054 pp. 1…
[cited by applicant]
Walker et al., “In Vivo Evaluation of 11C-DASB for Quantitative SERT Imaging in Rats and Mice,” The Journal of Nuclear Medicine, 57(1): 115-121 (2016).
[cited by applicant]
Zhang et al., “Comparison of the Pharmacological Profiles of Selective PDE4B and PDE4D Inhibitors in the Central Nervous System,” Scientific Reports, 7: Article No. 40115 pp. 1-10 (2017).
[cited by applicant]
Zhang et al., “The Discovery of a Novel Phosphodiesterase (PDE) 4B-Preferring Radioligand for Positron Emission Tomography (PET) Imaging,” Journal of Medicinal Chemistry, 60: 8538-8551 and Supplementary Information (201…
[cited by applicant]
Zhu et al., “The antidepressant- and anxiolytic-like effects of resveratrol: Involvement of phosphodiesterase-4D inhibition,” Neuropharmacology, 153: 20-31 (2019).
[cited by applicant]
Zucker et al., “Characterization of high-affinity [3H]TBZOH binding to the human platelet vesicular monoamine transporter,” Life Sciences, 69: 231-2317 (2001).
[cited by applicant]