4α-甲基粪生甾醇

4α-甲基粪生甾醇（英語：4α-methylfecosterol，或称作4α-甲基-5α-麦角甾-8(9),24(28)-二烯-3β-醇，4α-Methyl-5α-ergosta-8(9),24(28)-dien-3β-ol，分子式C₂₉H₄₈O）是真菌甾醇的代谢中间产物，可由酶HYD1改变双键位置转化为24-亚甲基冠影掌烯醇，或发生4-去甲基化生成粪生甾醇^[1][2]。

4α-甲基粪生甾醇
识别
CAS号	17757-07-2
PubChem	193524
ChemSpider	167937
SMILES	C[C@H]1[C@@H]2CCC3=C([C@]2(CC[C@@H]1O)C)CC[C@]4([C@H]3CC[C@@H]4[C@H](C)CCC(=C)C(C)C)C
InChI	1S/C29H48O/c1-18(2)19(3)8-9-20(4)23-12-13-25-22-10-11-24-21(5)27(30)15-17-29(24,7)26(22)14-16-28(23,25)6/h18,20-21,23-25,27,30H,3,8-17H2,1-2,4-7H3/t20-,21+,23-,24+,25+,27+,28-,29+/m1/s1
InChIKey	QLDNWJOJCDIMKK-XLFBYWHPSA-N
ChEBI	80094
KEGG	C15776
性质
化学式	C29H48O
摩尔质量	412.69 g·mol^−1
若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

参考文献

1. Kuchta, T; Bartková, K; Kubinec, R. Ergosterol depletion and 4-methyl sterols accumulation in the yeast Saccharomyces cerevisiae treated with an antifungal, 6-amino-2-n-pentylthiobenzothiazole.. Biochemical and biophysical research communications. 30 November 1992, 189 (1): 85–91. PMID 1449509. doi:10.1016/0006-291x(92)91529-y. 
2. Kuchta, T; Léka, C; Farkas, P; Bujdáková, H; Belajová, E; Russell, NJ. Inhibition of sterol 4-demethylation in Candida albicans by 6-amino-2-n-pentylthiobenzothiazole, a novel mechanism of action for an antifungal agent.. Antimicrobial agents and chemotherapy. July 1995, 39 (7): 1538–41. PMID 7492100. doi:10.1128/aac.39.7.1538  .