Enantioselective Pictet-Spengler-type cyclizations of hydroxylactams: H-bond donor catalysis by anion binding

IT Raheem, PS Thiara, EA Peterson…

文献索引：Nortey, Samuel O.; McComsey, David F.; Maryanoff, Bruce E. Heterocycles, 1993 , vol. 35, # 2 p. 1075 - 1088

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被引用次数: 357

摘要

... 6, 3f, R 1 = H, R 2 = F, R 3 = R 4 = H, 94, 97. ... The synthesis, which employs no protecting groups and generates only H 2 O, B(OH) 3 , and Al(OH) 3 as ... of N-acyliminium ions. Maryanoff, Bruce E.; Zhang, Han-Cheng; Cohen, Judith H.; Turchi, Ignatius J.; Maryanoff, Cynthia A. ...