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A process for the preparation of the 18, 11 - lactone of 16alpha - methyl - 3alpha, 11beta, 20beta - trihydroxy - 5beta - pregnan - 18 - acidity or corresponding 3, 20 - diacylate
A process for the preparation of the 18, 11 - lactone of 16alpha - methyl - 3alpha, 11beta, 20beta - trihydroxy - 5beta - pregnan - 18 - acidity or corresponding 3, 20 - diacylate
