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5α-dihydroprogesterone formation in human placenta from 5α-pregnan-3βα-ol-20-ones and 5-pregnan-3β-yl-20-one sulfate

✍ Scribed by Raymond A. Dombroski; M.Linette Casey; Paul C. MacDonald

Book ID
117668852
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
810 KB
Volume
63
Category
Article
ISSN
0960-0760

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THE total synthesis of several steroids (1.2) has previously been reported from this laboratory. In this communication a straightforward total synthesis of rec. 5a-preQnan-3~-ol-20-one (XIIIa) is reported. '3 All melting points were measured on Kofler block and corrected. '

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## Abstract A convenient synthesis of 5α‐[20β‐^2^H]pregnane‐3α,20α‐diol and 5α‐[20β‐^2^H]pregnane‐3β,20α‐diol from 3β‐hydroxy‐5α‐pregn‐16‐en‐20‐one is described. The reaction products are characterized by combined gas chromatography‐mass spectrometry.