A new synthetic route to 1,25-dihydroxy-vitamin D3
摘要:
A synthesis of 1,25-dihydroxy-vitamin D3 using a new acetylenic Ring-A precursor is described. Ring-A synthons 4a or 4b can be prepared in homochiral form by a disastereoselective diazoester cyclization.
A new synthetic route to 1,25-dihydroxy-vitamin D3
摘要:
A synthesis of 1,25-dihydroxy-vitamin D3 using a new acetylenic Ring-A precursor is described. Ring-A synthons 4a or 4b can be prepared in homochiral form by a disastereoselective diazoester cyclization.