Transformation of ascorbigen in an acidic medium, which affects the carbohydrate moiety of the molecule and results in the formation of 2-hydroxy-4-hydroxymethyl-3-(indol-3-yl)cyclopent-2-enone, 5-hydroxymethyl-2-(indol-3-yl)methylidenetetrahydrofuran-3-one, and 2-(indol-3-yl)acetylfuran, was investigated. Isolation and identification of the intermediates allowed the elucidation of the mechanism of this domino-type reaction.
作者:L. N. Lysenkova、M. I. Reznikova、A. M. Korolev、M. N. Preobrazhenskaya
DOI:10.1023/a:1014087630107
日期:——
Transformation of ascorbigen in an acidic medium, which affects the carbohydrate moiety of the molecule and results in the formation of 2-hydroxy-4-hydroxymethyl-3-(indol-3-yl)cyclopent-2-enone, 5-hydroxymethyl-2-(indol-3-yl)methylidenetetrahydrofuran-3-one, and 2-(indol-3-yl)acetylfuran, was investigated. Isolation and identification of the intermediates allowed the elucidation of the mechanism of this domino-type reaction.
[EN] NOVEL USE OF ASCORBIGEN<br/>[FR] NOUVELLE UTILISATION DE L'ASCORBIGÈNE
申请人:DSM IP ASSETS BV
公开号:WO2007112963A1
公开(公告)日:2007-10-11
[EN] Use of ascorbigen to promote the wellness state of a mammal. [FR] L'invention concerne une utilisation de l'ascorbigène pour promouvoir le bien-être d'un mammifère.
Transformation of ascorbigen into 1-deoxy-1-(indol-3-yl)-α-L-sorbopyranose and 1-deoxy-1-(indol-3-yl)-α-L-tagatopyranose
作者:Maria N. Preobrazhenskaya、Eduard I. Lazhko、Alexander M. Korolev、Marina I. Reznikova、Ilia I. Rozhkov
DOI:10.1016/0957-4166(96)00029-8
日期:1996.2
Ascorbigen, 2-C-[(indol-3-yl)methyl]-α-L-xylo-3-hexulofuranosonic acid γ-lactone 1a results from the interaction of 3-hydroxymethylindole and L-ascorbic acid in mild conditions. In alkaline media ascorbigen opens the lactone and furanose cycles and decarboxylates to yield a mixture of 1-deoxy-1-(indol-3-yl)-α-L-sorbopyranose 5a and 1-deoxy-1-(indol-3-yl)-α-L-tagatopyranose 6a. Formation of ascorbigen
The formation of 2-hydroxy-4-hydroxymethyl-3-(indol-3-yl)cyclopent-2-enone derivatives from ascorbigens
作者:Alexander M Korolev、Larisa N Yudina、Ilyia I Rozhkov、Ludmila N Lysenkova、Eduard I Lazhko、Yury N Luzikov、Maria N Preobrazhenskaya
DOI:10.1016/s0008-6215(00)00310-4
日期:2001.2
A facile preparation is described of 3-(indol-3-yl)-2-hydroxy-4-hydroxymethylcyclopent-2-enone and its N-derivatives in 15-40% yields by the degradation of ascorbigen or its N-derivatives in a warm solution of L-ascorbic acid through a sequential domino reaction. The same cyclopentenone derivatives were obtained in 30-40% yields by the condensation of (N-alkylindol-3-yl)glycolic acids with ascorbic acid. 2,6-Dihydroxy-1-(indol-3-yl)hexa-1,4-diene-3-one and 2-hydroxy-4-hydroxymethyl-5-(indol-3-yl)cyclopent-2-enone were identified as intermediates in this reaction. (C) 2001 Elsevier Science Ltd. All rights reserved.