期刊
TETRAHEDRON LETTERS
卷 44, 期 34, 页码 6527-6531出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(03)01190-0
关键词
indoles; N-acyliminium ion; erythrane; tryptamine; Pictet-Spengler
Enaminoesters containing a tethered indole or aryl moiety on the amine react with substituted maleic anhydrides or acryloyl chlorides to provide pyrrolinone or dihydropyridone products, respectively. The indole-tethered dihydropyridones can be induced to undergo a one-pot cyclization whereas, the indole-tethered pyrrolinone intermediates are readily cyclized with HCl. The aryl-tethered pyrrolinones or dihydropyridones can be isolated and subsequently induced to cyclize with triflic acid. This methodology culminates in the synthesis of erythrane-like and other natural products that are readily amenable to combinatorial library production. (C) 2003 Elsevier Ltd. All rights reserved.
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