CAL-B-catalyzed alkoxycarbonylation of A-ring stereoisomeric synthons of 1α,25-dihydroxyvitamin D3 and 1α,25-dihydroxy-19-nor-previtamin D3: A comparative study. First regioselective chemoenzymatic synthesis of 19-nor-A-ring carbonates

1. Díaz, M.
2. Gotor-Fernández, V.
3. Ferrero, M.
4. Fernández, S.
5. Gotor, V.