Steroidal anaesthetics: synthesis of 3alpha-hydroxy-5alpha-pregnane-11,20-dione-(21-14C) and 3alpha,21-dihydroxy-5alpha-pregnane-11,20-dione-(21-14C) 21-acetate. |
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| Authors: | B E Ayres C E Newall G H Phillipps |
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| Affiliation: | From Glaxo Research Limited, Greenford, Middlesex, England |
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| Abstract: | 3alpha-Hydroxy-5alpha-pregnane-11,20-dione-[21-14C] and 3alpha,21-dihydroxy-5alpha-pregnane-11,20-dione-[21-14C] 21-acetate were prepared from a common radio-labelled intermediate, 21-diazo-3alpha-hydroxy-5alpha-pregnane-11,20-dione-[21-14C] 3-nitrate, obtained by the reaction of 17beta-chlorocarbonyl-3alpha-hydroxy-5alpha-androstan-11-one 3-nitrate with diazomethane-[14C]. |
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