ABSTRACT: The 5α,6-dihydro congeners of veragranines A and
B, two steroidal alkaloids with an unprecedented hexacyclic
skeleton and potent analgesic effects, were synthesized from
hecogenin acetate within six steps. This work enables quick access
to the hexacyclic skeleton and is amendable to prepare other Dring-modified congeners.
【 在 zdzaba 的大作中提到: 】
: 主要成分是什么啊
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FROM 120.242.238.*