A HIGH YIELDING SYNTHESIS OF (25R)-SPIRO[CYCLOPROPANE-1,2'-(19-NOR-SPIROST-4-EN-22-ALPHA-O)-3-ONE]

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A HIGH YIELDING SYNTHESIS OF (25R)-SPIRO[CYCLOPROPANE-1,2'-(19-NOR-SPIROST-4-EN-22-ALPHA-O)-3-ONE]

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Title: A HIGH YIELDING SYNTHESIS OF (25R)-SPIRO[CYCLOPROPANE-1,2'-(19-NOR-SPIROST-4-EN-22-ALPHA-O)-3-ONE]
Author: DESAI, UR; TRIVEDI, GK
Abstract: The synthesis of title compound (1) by a series of functional group transformations in a high overall yield from the commercially available diosgenin is described. The synthesis requires 5-alpha, 6-beta-bromohydrin formation, radical-initiated ring formation, regioselective opening of the epoxy ring, and regioselective cyclopropanation as crucial steps.
URI: http://dspace.library.iitb.ac.in/xmlui/handle/10054/5460
http://hdl.handle.net/10054/5460
Date: 1991


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