78445-77-9Relevant articles and documents
PREPARATION AND ABSOLUTE CONFIGURATION AT C(20) OF 21-NOR-5α-CHOLAN-24-->20-OLIDE DERIVATIVES
Pouzar, Vladimir,Havel, Miroslav
, p. 107 - 117 (2007/10/02)
The lactones X and XI were obtained on reaction of the aldehyde III with lithium salt of methyl propynoate followed by hydrogenation of the intermediary esters IV and V.Treatment of the epoxides XXI and XXII with dilithium salt of acetic acid yielded the