Betulinic Acid → 9-Acetyloxy-5a,5b,8,8,11a-pentamethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysene-3a-carboxylic acid

関与物質

役割	名称	HCID	仕込み量
反応物	Betulinic Acid	HCID 64971	—
反応物	Betulin	HCID 72326	—
生成物	9-Acetyloxy-5a,5b,8,8,11a-pentamethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysene-3a-carboxylic acid	HCID 289984	—

The method of claim 12 wherein the overall yield of the α-isomer of betulinic acid from betulin is greater than 50%.