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Acta Chimica Sinica ›› 1987, Vol. 45 ›› Issue (8): 818-820. Previous Articles Next Articles
Original Articles
周维善;戴伟民;钱晋华
发布日期:
ZHOU WEISHAN;DAI WEIMIN;QIAN JINHUA
Published:
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Optically active 3-oxa-A-norsteroids I (R = R1 = H, RR1 = O) were prepared via conjugate addition of furan II to the a-methylene ketone formed in situ from sulfone III. Acid-catalyzed cyclization of the addition product gave furan ketone I [RR1 = S(CH2)3S]. Hydrolysis of I [RR1 = S(CH2)3S] with HgCl2-CaCO3 gave I (RR1 = O) while desulfurization with Raney-Ni gave I (R = R1 = H).
Key words: STEROIDS, OXYGEN HETEROCYCLICS, ESTRONE, MESOTOMY, SULFUR HETEROCYCLICS COMPOUNDS, CONTRACEPTIVES ORAL
CLC Number:
O629
ZHOU WEISHAN;DAI WEIMIN;QIAN JINHUA. Study on asymmetric synthesis of steroids XV: The synthesis of optically active 3-oxa-A-nor-steroids[J]. Acta Chimica Sinica, 1987, 45(8): 818-820.
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