Studies towards the total synthesis of drimentine C. Preparation of the AB and CDEF ring fragments.

Studies towards the total synthesis of drimentine C. Preparation of the AB and CDEF ring fragments.
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DOI:
10.1002/ejoc.202000158
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发表时间:
2020-05-03
影响因子:
2.8
通讯作者:
Douglas CJ
Douglas CJ
中科院分区:
化学3区
文献类型:
--
作者:
Pound SM;Underwood SJ;Douglas CJ

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The drimentine family is a class of hybrid isoprenoids derived from actinomycete bacteria. Members of this family display weak antitumor and antibacterial activity. Herein we report our efforts toward the total synthesis of drimentine C using three distinct approaches incorporating palladium-catalyzed cyanoamidation, reductive cross-coupling, and photoredox-catalyzed α-alkylation of an aldehyde as key steps. Our synthetic efforts use a convergent synthesis to assemble the terpenoid and alkaloid portions of drimentine C from readily available l-tryptophan, l-proline, and (+)-sclareolide. Synthetic efforts towards the total synthesis of the natural product drimentine C are described. Three distinct approaches are discussed incorporating palladium-catalyzed cyanoamidation, reductive cross-coupling and photoredox-catalyzed α-alkylation of an aldehyde as key steps to join the alkaloid and terpenoid fragments
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