名称:
A convergent approach to the dihydrotachysterol diene system. Application to the synthesis of dihydrotachysterol2 (DHT2), 25-hydroxydihydrotachysterol2 (25-OH-DHT2), 10(R),19-dihydro-(5E)-3-epivitamin D2 and 25-hydroxy-10(R),19-dihydro-(5E)-3-epivitamin D2
摘要:
Total synthesis of A-ring fragments of 10(S),19-dihydrovitamins D and 10(R),19-dihydro-(5E)-epivitamins D from (+)-(S)-carvone and (-)-(R)-carvone is described. These fragments were used for convergent synthesis of dihydrotachysterol2 (DHT2), 25-hydroxydihydrotachysterol2, 10(R),19-dihydro-(5E)-3-epivitamin D2, and 25-hydroxy-10(R),19-dihydro-(5E)-3-epivitamin D2.