Li YK, Cui MX, Sha F, Li Q, Wu XY. Construction of indazolo[3,2-a]isoquinolines via [3 + 2] cycloaddition of benzynes.
Org Biomol Chem 2019;
17:8963-8968. [PMID:
31576394 DOI:
10.1039/c9ob01878f]
[Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A [3 + 2] annulation protocol for the construction of N-substituted indazolo[3,2-a]isoquinolines starting from benzynes and C,N-cyclic azomethine imines was developed. A diverse range of highly functionalized products indazolo[3,2-a]isoquinolines featuring an indazole scaffold can be easily accessed via a one-step reaction under mild conditions, and they show good anti-proliferative activity on cancer cells.
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