Tetrahedron Letters p. 2773 - 2774 (1985)
Update date:2022-08-04
Topics: Facile Synthesis Side chain
Hedtmann, Udo
Welzel, Peter
Key steps of a new synthesis of the 20-hydroxyecdysone side chain are (i) addition of 2 to 20-ketopregnanes and (ii) the stereoselective reduction of the 22-keto group after OH group protection.
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Doi:10.1002/hlca.19820650117
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