- Syntheses of Picroroccelin Diastereomers and Their Regioisomers
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Picroroccelin, 3,6-dibenzyl-3-hydroxy-6-methoxy-1-methyl-2,5-piperazinedione, and its regioisomer were synthesized as the diastereomeric mixtures from glycine anhydride via 3,6-dibenzylidene-1-methyl-2,5-piperazinedione by eight steps.
- Shin, Chung-gi,Nakano, Toshitaka,Sato, Yoshiaki,Kato, Haruo
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p. 1453 - 1456
(2007/10/02)
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- N.M.R. Spectra and Solution Structures of Some Piperazine-2,5-diones. X-Ray Crystal Structure of threo-1-Acetyl-3-(α-bromobenzyl)-3-methoxy-piperazine-2,5-dione
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3-(α-Bromobenzyl)-3-methoxypiperazine-2,5-diones are prepared by the reaction of 3-benzylidenepiperazine-2,5-diones with N-bromosuccinimide in methanol.The crystal structure of the threo-1-acetyl compound shows the side chain in the EN conforma
- Elix, John A.,Fallon, Gary D.,Marcuccio, Sebastian M.,Rae, Ian D.
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p. 1141 - 1149
(2007/10/02)
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- α, β-UNSATURATED CARBOXYLIC ACID DERIVATIVES. 20. n-METHYLATION OF α-DEHYDROAMINO ACID ESTER ITS CYCLIC DIPEPTIDE FROM VARIOUS ROUTES
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The selective N-methylation of 1-, 4-, and 1,4-positions of individual 3- and 3,6-dialkylidene-2,5-piperazinediones (PDO) either by the cyclization of α-dehydroamino acid ester with methylamine or by the reaction of PDO with methyl iodide in the presence
- Shin, Chung-gi,Sato, Yoshiaki,Hayakawa, Masato,Kondo, Masamichi,Yoshimura, Juji
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p. 1573 - 1578
(2007/10/02)
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