ISSN:
1573-9171
Schlagwort(e):
dehydration
;
phenylsulfinyl chloride
;
sulfinic esters
;
Δ9-pregnanes
;
9α-hydroxypregnanes
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract The approaches to the synthesis of various 16α,17α-disubstituted pregna-4,9-dien-3,20-diones from the corresponding 9α-derivatives with labile epoxide, dioxolane, and oxathiolane ringsD′ have been studied. The transformation has been found to proceed efficiently when the 9α-sulfinic esters are used at the intermediate stage and then elimination of sulfinic acid by TsOH/SiO2 is carried out.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00698968
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