IP Library › Granted Patent US 12,747,257
Granted Patent B2
US 12,747,257 · App. 17/960,202 · Granted Sep 29, 2026

Polyhydroxylated cyclopentane derivatives and methods of use

Inventors: Weimin Wang (Cambridge, MA); Xiaochuan Cai (Cambridge, MA)
Assignee: Sanegene Bio USA Inc.
C07F9/222C07H21/00
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Quick Facts
Patent No.
US 12,747,257
App. No.
17/960,202
Granted
Sep 29, 2026
Kind
B2
Abstract

The present disclosure provides linker compounds of Formula (I) or (II): pharmaceutically acceptable salts thereof, and related scaffolds and conjugates. The present disclosure also relates to uses of the linker compounds, scaffolds, and conjugates, e.g., in delivering nucleic acid and/or treating or preventing diseases.

Claims (27)

1 . A conjugate, or a pharmaceutically acceptable salt thereof, wherein the conjugate comprises:

(i) one or more Nucleic Acid Agents; and

(ii) one or more moieties selected from:

wherein:

Y is H, C 1 -C 6 alkyl optionally substituted with one or more halogen, —P(R Y ) 2 , —P(OR Y )(N(R Y ) 2 ), —P(═O)(OR Y )R Y , —P(═S)(OR Y )R Y , —P(═O)(SR Y )R Y , —P(═S)(SR Y )R Y , —P(═O)(OR Y ) 2 , —P(═S)(OR Y ) 2 , —P(═O)(SR Y ) 2 , —P(═S)(SR Y ) 2 , or a hydroxy protecting group;

each R Y independently is H or C 1 -C 6 alkyl optionally substituted with one or more halogen or cyano;

Z is H, or C 1 -C 6 alkyl optionally substituted with one or more halogen, —P(R Z ) 2 , —P(OR Z )(N(R Z ) 2 ), —P(═O)(OR Z )R Z , —P(═S)(OR Z )R Z , —P(═O)(SR Z )R Z , —P(═S)(SR Z )R Z , —P(═O)(OR Z ) 2 , —P(═S)(OR Z ) 2 , —P(═O)(SR Z ) 2 , —P(═S)(SR Z ) 2 , or a hydroxy protecting group;

each R Z independently is H or C 1 -C 6 alkyl optionally substituted with one or more halogen or cyano;

and each ## independently indicates an attachment to the rest of the conjugate.

2 . The conjugate of claim 1 , wherein Y is H.

3 . The conjugate of claim 1 , wherein Y is C 1 -C 6 alkyl optionally substituted with one or more halogen.

4 . The conjugate of claim 1 , wherein Y is —P(R Y ) 2 , —P(OR Y )(N(R Y ) 2 ), —P(═O)(OR Y )R Y , —P(═S)(OR Y )R Y , —P(═O)(SR Y )R Y , —P(═S)(SR Y )R Y , —P(═O)(OR Y ) 2 , —P(═S)(OR Y ) 2 , —P(═O)(SR Y ) 2 , or —P(═S)(SR Y ) 2 .

5 . The conjugate of claim 1 , wherein Y is a hydroxy protecting group.

6 . The conjugate of claim 1 , wherein Z is H.

7 . The conjugate of claim 1 , wherein Z is C 1 -C 6 alkyl optionally substituted with one or more halogen.

8 . The conjugate of claim 1 , wherein Z is —P(R Z ) 2 , —P(OR Z )(N(R Z ) 2 ), —P(═O)(OR Z )R Z , —P(═S)(OR Z )R Z , —P(═O)(SR Z )R Z , —P(═S)(SR Z )R Z , —P(═O)(OR Z ) 2 , —P(═S)(OR Z ) 2 , —P(═O)(SR Z ) 2 , or —P(═S)(SR Z ) 2 .

9 . The conjugate of claim 1 , wherein Z is a hydroxy protecting group.

10 . The conjugate of claim 1 , wherein the conjugate further comprises a lipid moiety, a peptide moiety, or an antibody moiety.

11 . The conjugate of claim 1 , wherein each Nucleic Acid Agent independently comprises an oligonucleotide.

12 . A pharmaceutical composition comprising the conjugate of claim 1 , and at least one pharmaceutically acceptable excipient or carrier.

13 . A method of reducing the expression of a target gene in a subject or delivering a Nucleic Acid Agent to a subject, comprising administering to the subject the conjugate of claim 1 .

14 . The conjugate of claim 1 , wherein the conjugate comprises

15 . The conjugate of claim 1 , wherein the conjugate comprises

16 . The conjugate of claim 1 , wherein the conjugate comprises

17 . The conjugate of claim 1 , wherein the conjugate comprises

18 . The conjugate of claim 1 , wherein the conjugate comprises

19 . The conjugate of claim 1 , wherein the conjugate comprises

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2025
From: SANEGENE BIO INC.
To: SANEGENE BIO USA INC.
Reel/Frame 073966/0761 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 9, 2022
From: WANG, WEIMIN; CAI, XIAOCHUAN
To: SANEGENE BIO USA INC.
Reel/Frame 062042/0750 →
Continuity (2)
Provisional Application 63252358 · Oct 5, 2021
Related Publication 20230227480A1 · Jul 20, 2023
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