132273-07-5Relevant articles and documents
Cholic Acid as an Architectural Component in Biomimetic/Molecular Recogition Chemistry; Synthesis of "Cholaphanes" With Facial Differentiation of Functionality
Bonar-Law, Richard P.,Davis, Anthony P.,Dorgan, Brian J.
, p. 9855 - 9866 (2007/10/02)
Facially-differentiated cholaphanes (2) were synthesized in good yields from cholic acid (1).Key steps were the selective 3,7-bis-O-acetylation of methyl cholate (3), the 12-O-benzylation of diacetate 4, and the introduction of a 3β-(p-aminomethyl)phenyl substituent using an arylmanganese reagent and employing the novel ''benzostabase'' N-protection methodology.