Short Synthesis of New 23-Vinyl Steroid Derivatives from Sapogenins by the Action of 9-BBN on Vinylogous Esters

Some new 16β‐acetoxy‐22,26‐epoxy‐23‐vinylcholest‐22‐ene steroid derivatives have been synthesized from sapogenins via a two‐step sequence involving the reduction of a vinylogous ester moiety by 9‐BBN, a reaction with few precedents and for which a coherent mechanistic interpretation has not been giv...

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Veröffentlicht in:	European journal of organic chemistry 2004-08, Vol.2004 (15), p.3262-3268
Hauptverfasser:	Sandoval-Ramírez, Jesús, Meza-Reyes, Socorro, del Rio, Rosa E., Vazques, Fabiola Reyes, Santillán, Rosa Luisa, Achab, Said, Bohé, Luis
Format:	Artikel
Sprache:	eng
Schlagworte:	23-Vinyl-22 23‐Vinyl‐22,26‐epoxycholest‐22‐enes 26-epoxycholest-22-enes 9-BBN Sapogenins Spiroketal cleavage Vinylogous esters
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