4209-95-4Relevant articles and documents
Total Synthesis of Aromatic Steroids
Daniewski, Andrzej Robert,Kowalczyk-Przewloka, Teresa
, p. 2976 - 2980 (2007/10/02)
The coupling reaction of m-methoxystyrene (1) and 4-bromo-1-diazo-2-butanone (2) over Pd(OAc)2 gave trans and cis (ratio 7:1) cyclopropane derivatives 3a and 3b, which were used for the alkylation of 2-methylcyclopentane-1,3-dione to afford triketones 4a
A convenient synthesis of estrone and 11-methylequilenines based on the thermal elimination of β-ketosulfoxides
Kurosawa,Tohma,Oikawa,Yonemitsu
, p. 1533 - 1539 (2007/10/11)
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Synthesis of 13-alkyl-gon-4-ones
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, (2008/06/13)
The preparation of 13-methylgon-4-enes and novel 13-polycarbonalkylgon-4-enes by a new total synthesis is described. 13-Alkylgon-4-enes having progestational, anabolic and androgenic activities are prepared by forming a tetracylic gonane structure unsaturated in the 1,3,5(10),9(11) and 14-positions, selectively reducing in the B- and C-rings, and converting the aromatic A-ring compounds so-produced to gon-4-enes by Birch reduction and hydrolysis.