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Facile syntheses of 3-spiro- and 3,6-bridged 2,5-piperazinediones

✍ Scribed by Chung-gi Shin; Yoshiaki Sato; Juji Yoshimura

Publisher
Elsevier Science
Year
1981
Tongue
French
Weight
217 KB
Volume
22
Category
Article
ISSN
0040-4039

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✦ Synopsis

The intramolecular addition of hydroxyl group of 3-(3-hydroxyl)propylidene-2,5_piperazinedione to 3-position and the same substitution of 3-(3-hydroxy)propyl derivative to 6-position gave the corresponding 3-spiro-and 3,6bridged 2,5_piperazinediones, respectively.

Recently, much attention is being denoted to the synthesis of fumitremorgins, 1) verruculogen, 2) and bicyclomycin, 3) containing a hydroxyl group at 3-

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Syntheses and PE-Spectroscopic Investiga
Syntheses and PE-Spectroscopic Investigations of 2,6- and 3,5-Bridged 1,4-Dimethylidenecyclohexanes
✍ Teh-Chang Chou; Holger Lange; Rolf Gleiter; Tibor GΓΆgh; Miroslav KrΓ­ΕΎ; Max H. Pf πŸ“‚ Article πŸ“… 1995 πŸ› John Wiley and Sons 🌐 German βš– 834 KB

## Abstract Three 1,4‐dimethylidenecyclohexanes, bridged in the 2,6‐ and 3,5‐positions by two ethano (4), one ethano and one propano (5), and two propano bridges (6) have been synthesized. The interaction of the two exocyclic methylidene groups has been investigated by He(I) photoelectron (PE) spec