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Thiophen Analogues of Steroids

Thiophen Analogues of Steroids.— The ketone (141) was condensed with 2-(carbethoxymethyl)piperidine to give the 10-aza-l7-thia-steroid (142). With 4-oxo-4,5,6,7-tetrahydrobenzo[6]thiophen and 2-methyI-3-oxothiophen 1,1-dioxide as the precursors of rings a and B, and D, respectively, (143) was synthesized ionic hydrogenation of the 8,14-diene derived from (143) resulted [Pg.93]

Thiophen Analogues of Steroids. - A 6a-substituted optically pure steroid with thiophen as the A ring has been prepared via asymmetric induction. The absolute configurations of the precursors and of the cyclized products were determined by c.d. ... [Pg.114]

See other pages where Thiophen Analogues of Steroids is mentioned: [Pg.121] [Pg.522] [Pg.121] [Pg.522] [Pg.121] [Pg.522] [Pg.121] [Pg.522] [Pg.454] [Pg.196] [Pg.174] [Pg.434]

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Thiophene analogues