Total Synthesis of (-)-Kopsifoline A and (+)-Kopsifoline E.
Total Synthesis of (-)-Kopsifoline A and (+)-Kopsifoline E.
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DOI:
10.1021/acs.orglett.1c03448
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发表时间:
2021-12-03
期刊:
影响因子:
5.2
通讯作者:
Movassaghi, Mohammad
中科院分区:
文献类型:
--
作者:
Myeong, In-Soo;Avci, Nadide Hazal;Movassaghi, Mohammad
We report the first total synthesis of (−)-kopsifoline A and (+)-kopsifoline E. Our synthetic strategy features a biogenetically inspired regioselective C17-functionalization of a versatile intermediate containing the pentacyclic core of aspidosperma alkaloids. The vinylogous urethane substructure of this intermediate affords (−)-kopsifoline D via C3–C21 bond formation under the Mitsunobu reaction conditions, while it enables selective C17-functionalization en route to (−)-kopsifoline A and (+)-kopsifoline E.
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