Back to results
US 12,767,624 B2Granted
Method for purifying cannabinoid compounds
AssigneeChengdu Baiyu Pharmaceutical Co., Ltd
InventorsYi Sun, Xuezhen Xu, Jing Zhang, Yonggang Wei
Life of this patent
Estimating the term…
Abstract
Disclosed is a method for purifying cannabinoid compounds that enables cannabinoid compounds to be obtained more economically and with a better purification effect.
Claims9
A method for purifying cannabinoid compounds, stereoisomers, deuterated products or salts thereof, comprising:
- A-(OH)nA-(OG)nA-(OH)n
- wherein,
- A-(OH)n is
- A-(OG)n is:
- wherein,
- is a single bond or a double bond;
- R0 is C1-6 alkyl or C1-6 hydroxyalkyl;
- R is H or C1-12 alkyl;
- R1 is H or —COOH;
- R2 is H, —COOH or C1-6 alkyl;
- R3 and R3′ are each independently OH or C1-6 alkoxy, and at least one of R3 and R3′ is C1-6 alkoxy;
- R4 is OH, C1-6 alkoxy, —COOH or —OCOC1-6 alkyl;
- G is a silyl protecting group;
- R3a and R3b are each independently —OG or C1-6 alkoxy, and at least one of R3a and R3b is —OG;
- n is 1 or 2.
12 more elements
Dependencies are inferred from the claim text.