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STEROID DERIVATIVES OF PREGNA-4,9(11),17(20)-TRIEN-3-ONE, THEIR PREPARATION, THEIR APPLICATION TO THE PREPARATION OF STEROIDIC COMPOUNDSOF PREGNA-4,9(11),16-TRIEN-3,20 AND NOVEL INTERMEDIATES-DIONE,
STEROID DERIVATIVES OF PREGNA-4,9(11),17(20)-TRIEN-3-ONE, THEIR PREPARATION, THEIR APPLICATION TO THE PREPARATION OF STEROIDIC COMPOUNDSOF PREGNA-4,9(11),16-TRIEN-3,20 AND NOVEL INTERMEDIATES-DIONE,
The invention relates to the compounds (I): (I) where Hal is chlorine or bromine, R is alkyl (1 - 6 c), aralkyl (7 - 15 c) or a silyl residue, K is a group, or, ( n = 2 or 3) and the wavy lines symbolize the possible existence of 2 isomers, their preparation, their application to the preparation of compounds (A): (A) where R1 is an acyl (1-8 c) and new intermediaries.
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机译：本发明涉及化合物（I）：（I）其中Hal为氯或溴，R为烷基（1-6 c），芳烷基（7-15 c）或甲硅烷基残基，K为基团，或，（ n = 2或3），并且波浪线表示可能存在2个异构体，它们的制备及其在化合物（A）制备中的应用：（A）其中R1是酰基（1-8 c）和新的中间体。
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