Author:
Kundu Nakuleswar,Osawa Yoshio
Abstract
Abstract3H‐ and 14C‐Labelled doisynolic acid was prepared from 6,7‐3H‐, 2,4,6,7‐3H‐ and 4‐14C‐labelled oestradiol and oestrone by a regulated alkali fusion. Labelled marrianolic acid was similarly prepared from labelled oestriol. Unstability of regiospecific tritium labels in alkali was observed by use of double labelled compounds.
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1. Synthetic Estrogens and the Relation Between their Structure and their Activity.
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4. Steroidal estrogens
5. Abbreviations used are: Marrianolic acid 7‐hydroxy‐2‐carboxy‐1 2 3 4 4a 9 10 10a‐octahydro‐2‐methylphenanthrene acetic acid; doisynolic acid 7‐hydroxy‐1 2 3 4 4a 9 10 10a‐octahydro‐2‐methyl‐1‐ethylphenantrene 2‐carboxylic acid; oestradiol OE2 1 3 5(10)‐ oestratriene‐3‐17β‐diol; oestriol OE3 1 3 5(10)‐oestratriene‐3 16α 17β‐triol; oestrone OE1 17β‐hydroxy‐1 3 5(10)‐oestratrien‐17‐one.
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