O-Methylglucogalloyl esters: Synthesis and evaluation of their antimycotic activity
摘要:
The two anomers of O-methyl gluco-2,3-digalloyl esters were synthesized and their antimycotic activity toward yeasts of biomedical importance was evaluated. When used at subinhibitory concentration and regardless of stereochemistry at the anomeric carbon, these compounds enhance the antimycotic activity of Amphotericin B. (c) 2005 Elsevier Ltd. All rights reserved.
O-Methylglucogalloyl esters: Synthesis and evaluation of their antimycotic activity
摘要:
The two anomers of O-methyl gluco-2,3-digalloyl esters were synthesized and their antimycotic activity toward yeasts of biomedical importance was evaluated. When used at subinhibitory concentration and regardless of stereochemistry at the anomeric carbon, these compounds enhance the antimycotic activity of Amphotericin B. (c) 2005 Elsevier Ltd. All rights reserved.
The present invention relates to compound of formula (I) wherein R1, R2, R3, R4, R5, R6, R7, and X are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases, which are associated with the modulation of CB1 receptors.
Formation of enamine Schiff bases by ring cleavage of pyridine
作者:Russell J. Molyneux、Rosalind Y. Wong
DOI:10.1016/0040-4020(77)80378-5
日期:1977.1
On treatment with diphenyldichloromethane or anisal chloride in the presence of acetone and aqueoussodiumhydroxide, pyridine undergoes condensation and ring cleavage to yield the enamine Schiff bases 1,1-diphenyl-2-azadeca-1,3Z,5Z,7E-tetraen-9-one (1) and 1-(4-methoxyphenyl)-2-azadeca-1E,3Z,5Z,7E-tetraen-9-one (7). The reaction proceeds through attack of acetonyl carbanion on the initially formed
The present invention relates to compounds of the general formula
and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases such as obesity by selective modulation of CB1 receptors.
Ellagitannin Chemistry. Preparative and Mechanistic Studies of the Biomimetic Oxidative Coupling of Galloyl Esters
作者:Ken S. Feldman、Susan M. Ensel
DOI:10.1021/ja00087a022
日期:1994.4
The construction of strictly the (S)-hexahydroxydiphenyl (HHDP) unit via biomimetic cyclization of suitably protected glucose-derived digalloyl esters has been achieved in good yield. Studies on substrates of increasing complexity utilizing a range of oxidants (Pb(OAc)(4), VOF3, Tl2O3) have helped define the scope and limitations of this approach to ellagitannin synthesis. Computer modeling of key cyclization precursors helped elucidate the molecular-level structural details which undergird the Haslam/Schmidt biosynthesis model for this class of naturally occurring secondary plant metabolites.
Bradley; Robinson; Schwarzenbach, Journal of the Chemical Society, 1930, p. 796,811