Total synthesis of lembehyne A, a neuritogenic spongean polyacetylene
摘要:
The first total synthesis of lembehyne A, a neuritogenic polyacetylene from a marine sponge Haliclona sp., was achieved by utilizing alkyne formation with dimethyl-l-diazo-2-oxopropylphosphonate and asymmetric reduction with Alpine-borane as the key reactions. (C) 2001 Elsevier Science Ltd. All rights reserved.
Total synthesis of lembehyne A, a neuritogenic spongean polyacetylene
摘要:
The first total synthesis of lembehyne A, a neuritogenic polyacetylene from a marine sponge Haliclona sp., was achieved by utilizing alkyne formation with dimethyl-l-diazo-2-oxopropylphosphonate and asymmetric reduction with Alpine-borane as the key reactions. (C) 2001 Elsevier Science Ltd. All rights reserved.
A Photochemical Protocol for the Synthesis of Weinreb and Morpholine Amides from Carboxylic Acids
作者:Asimina Bourboula、Olga G. Mountanea、George Krasakis、Christiana Mantzourani、Maroula G. Kokotou、Christoforos G. Kokotos、George Kokotos
DOI:10.1002/ejoc.202300008
日期:——
A photochemical protocol for the synthesis of Weinreb amides and morpholine amides fromcarboxylicacids is presented. Various carboxylicacids were directly coupled to N,O-dimethylhydroxylamine and morpholine, upon irradiation with either LED 370 nm or sunlight in the presence of 4-dimethylaminopyridine and bromotrichloromethane, providing amides in moderate to high yields.