Constituents of human meconium: II. Identification of steroidal acids with 21 and 22 carbon atoms
- 1 March 1982
- Vol. 17 (3) , 241-249
- https://doi.org/10.1007/bf02535111
Abstract
Monohydroxylated acid fraction isolated from human meconium was found to contain, in addition to C20 and C24 acids identified previously, three C22 bile acids-(20S)-3α-hydroxy-23,24-bisnor-5β-cholan-22-oic, (20S)- and (20R)-3β-hydroxy-23,24-bisnor-chol-5-en-22-oic, and one C21 acid-3β-hydroxypregn-5-en-21-oic. These compounds were identified by capillary gas chromatography-mass spectrometry and by comparison with standards. It is postulated that these C22 acids, as well as the two monohydroxylated C24 bile acids (lithocholic and 3β-hydroxychol-5-enoic) are produced in the maternal intestine by microbial flora and transferred to the fetus through the placenta.Keywords
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