中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
胆固醇杂质EPA | lathosterol | 80-99-9 | C27H46O | 386.662 |
7-脱氢醋酸胆固醇 | 7-Dehydrocholesteryl acetate | 1059-86-5 | C29H46O2 | 426.683 |
7-氧代胆甾-5-烯-3-beta-基乙酸酯 | 7-ketocholesteryl acetate | 809-51-8 | C29H46O3 | 442.682 |
胆甾-5-烯-3,7二醇 | cholest-5-en-3β,7β-diol | 566-27-8 | C27H46O2 | 402.661 |
烯胆固烷酮 | 5α-cholest-7-en-3-one | 15459-85-5 | C27H44O | 384.646 |
—— | acetic acid-(7β-hydroxy-5α-cholestanyl-(3β)-ester) | 40823-16-3 | C29H50O3 | 446.714 |
7-去氢胆固醇 | 7-dehydrocholesterol | 434-16-2 | C27H44O | 384.646 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(3beta,5alpha)-胆甾-8(14)-烯-3-基乙酸酯 | 3β-(Acetyloxy)-5α-cholest-8(14)-ene | 6562-21-6 | C29H48O2 | 428.699 |
—— | 5α-cholesta-7,9(11)-dien-3β-yl acetate | 6702-05-2 | C29H46O2 | 426.683 |
胆固醇杂质EPA | lathosterol | 80-99-9 | C27H46O | 386.662 |
—— | 5α-cholest-7-en-3α-ol | 24039-00-7 | C27H46O | 386.662 |
—— | 5α-cholest-8(14)-ene-3β,7α-diol 3-acetate | 56391-82-3 | C29H48O3 | 444.698 |
—— | 5α-cholest-8(14)-en-3β-ol | 566-99-4 | C27H46O | 386.662 |
—— | 3β-acetoxy-5α-cholest-8(14)-en-7-one | 21152-11-4 | C29H46O3 | 442.682 |
[(3S,5S,9R,10S,13R,17R)-10,13-二甲基-17-[(2R)-6-甲基庚烷-2-基]-15-氧代-1,2,3,4,5,6,7,9,11,12,16,17-十二氢环戊烯并[a]菲-3-基]乙酸酯 | 3β-acetoxy-5α-cholest-8(14)-en-15-one | 34495-42-6 | C29H46O3 | 442.682 |
—— | [choleste-7-ene-3-oxy]trimethylsilane | 2665-03-4 | C30H54OSi | 458.844 |
—— | 5α-cholest-8-ene-3β,7α-diol | 116561-42-3 | C27H46O2 | 402.661 |
—— | 5α-cholest-8(14)-ene-3β,7α-diol | 69140-06-3 | C27H46O2 | 402.661 |
—— | 3β-hydroxy-5α-cholesta-7,14-diene | 34227-11-7 | C27H44O | 384.646 |
3-羟基胆甾-8-烯-7-酮 | 3β-hydroxy-5α-cholest-8-en-7-one | 69140-15-4 | C27H44O2 | 400.645 |
烯胆固烷酮 | 5α-cholest-7-en-3-one | 15459-85-5 | C27H44O | 384.646 |
—— | 5α-cholesta-6,8(14)-dien-3β-ol | 57665-71-1 | C27H44O | 384.646 |
—— | 3β-hydroxy-5α-cholest-8(14)-en-7-one | 566-29-0 | C27H44O2 | 400.645 |
考来酮 | 15-Ketocholestene | 50673-97-7 | C27H44O2 | 400.645 |
—— | 3β-acetoxy-5α-cholestan-7-one | 6038-71-7 | C29H48O3 | 444.698 |
Steroids with hydroxyl group in positions 2, 3, 6, 7, 17 and 20 were esterified with heptafluorobutyric anhydride. The obtained esters on treatment with lithium bromide in
Steroidal 3-fluoroderivatives were prepared from corresponding tosylates using tetrabutylammonium difluorodimethylphenylsilicate as fluorinating agent. The reaction was tested on all four possible C-3 and C-5 stereoisomers of cholestane and 17-oxoandrostane skeletons. In this reaction only one isomer was always formed with opposite configuration at C-3 to starting tosylate. The reaction is accompanied by elimination which affords a mixture of corresponding olefines.