α,β-Unsaturated carboxylic acid derivatives. Part 18. Syntheses of geometric isomers of 3,6-dibenzylidene- and 3-p-anisylidene-6-benzylidene-2,5-piperazinediones
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 2,p. 419-421
- https://doi.org/10.1039/p19800000419
Abstract
Naturally occurring 3,6-dibenzylidene- and 3-p-anisylidene-6-benzylidene-2,5-piperazinediones and their geometric isomers were synthesized by the condensation of 1-acetyl or 1,4-diacetyl derivative of (E)- and (Z)-benzylidene- or p-anisylidene-2,5-piperazinediones with an appropriate aldehyde. The configuration of these compounds were assigned on the basis of the spectroscopic analyses, and those of natural products were determined to be (3Z,6Z).This publication has 1 reference indexed in Scilit:
- Stereochemical studies on the biosynthesis of the αβ-didehydro-amino-acid units of mycelianamide, cyclopenin, and cyclopenolJournal of the Chemical Society, Perkin Transactions 1, 1976