Synthesis of CD-ring modified 1α,25-dihydroxy vitamin D analogues : E-ring analogues
摘要:
Vitamin D analogues, characterized by the absence of both C- and D-rings and by the presence of a five-membered ring formed by connecting C-12 and C-21 (E-ring analogues) are described. Copyright (C) 1996 Elsevier Science Ltd
Chemical behavior of (+)-(1R,3S)-1,2,2-trimethyl-1,3-bis(hydroxymethyl)cyclopentane upon attempted halogenation. Formation of (+)-(1R,5S)-1,8,8-trimethyl-3-oxabicyclo[3.2.1]octane