Pd-Catalyzed Enantioselective Dearomative Allylic Annulation to Access PPAPs Analogues
作者:Sanliang Li、Qiaoyu Chen、Xiaoxiao Xie、Junfeng Yang、Junliang Zhang
DOI:10.1021/acs.orglett.1c02842
日期:2021.10.15
properties and associated synthetic challenges. We present herein that Pd-phosphoramidite catalysts promote the enantioselective dearomative allylic annulation reaction between allyl desoxyhumulones and allylic dicarbonates, affording PPAPs analogues in good yields and enantioselectivities. The reaction likely proceeds through two-step dearomative allylation by Pd, and the C-allylation pathway is the
多环聚异戊二烯化酰基间苯三酚 (PPAP) 具有共同的双环 [3.3.1] 烯酮核心结构,由于其迷人的生物学特性和相关的合成挑战,吸引了合成有机化学家的大量关注。我们在本文中提出,Pd-亚磷酰胺催化剂促进烯丙基脱氧葎草酮和烯丙基二碳酸酯之间的对映选择性脱芳基烯丙基环化反应,以良好的产率和对映选择性提供 PPAP 类似物。该反应可能通过 Pd 的两步脱芳基烯丙基化进行,C -烯丙基化途径是主要的机制模型。