Affiliation:
1. Institut für Organische Chemie und Biochemie der Universität Freiburg, Albertstraße 21, D-7800 Freiburg
Abstract
Abstract
The amides of nicotinoylamino acids were prepared and alkylated to the quaternary salts 1f-n. The α-amino acid moiety in 1 is S configurated. The salts 1 cyclise under the influence of base to give the cyclopeptide-like substances 4, 5 and 7, with seven-or fourteen (sixteen, eighteen-) membered rings, respectively.
Cited by
4 articles.
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