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SYNTHESIS OF 7α-METHYL AND 7β-METHYL-10β, 17β-DIACETOXY-⊿
4
-ESTRENE-3-ONE
NI YUAN, HAO RI-YING, ZHOU WEI-SHAN
Acta Chimica Sinica . 1982, (
6
): 573 -576 .
