22153-44-2Relevant articles and documents
A highly efficient transformation of cis- to trans-cinnamic acid derivatives by iodine
Li, Zhen-Jie,Cai, Le,Mei, Rui-Feng,Dong, Jian-Wei,Li, Shu-Quan,Yang, Xue-Qiong,Zhou, Hao,Yin, Tian-Peng,Ding, Zhong-Tao
supporting information, p. 7197 - 7200 (2015/12/12)
Cinnamic acid derivatives (CAs), which have proven to be versatile components, are present in abundance in biologically active natural products, and are widely used as intermediates in the manufacture of pharmaceuticals, and chemicals. The presence of cis- and trans-CAs created difficulties for natural product and organic synthetic studies. A highly efficient method that utilized iodine to entirely convert cis- CAs into their trans-forms was developed to solve this problem. The mechanism of study revealed this conversion occurred via an anti-diiodo intermediate.
Acylated flavonol diglucosides from Lotus polyphyllos
El Mousallami, Amani M.D.,Afifi, Manal S.,Hussein, Sahar A.M.
, p. 807 - 811 (2007/10/03)
Three acylated flavonol diglucosides, kaempferol 3-O-β -(6″-O-E-p-coumaroylglucoside)-7-O-β-glucoside; quercetin 3- O-β-(6″-O-E-p-coumaroylglucoside)-7-O-β-glucoside; isorhamnetin 3-O-β-(6″-O-E-p-coumaroylglucoside)-7-O-β-glucoside were isolated from the
Structure Elucidation and Synthesis of Flavonol Acylglycosides. III. The Synthesis of Tiliroside
Vermes, Barbara,Chari, Vedanta Mohan,Wagner, Hildebert
, p. 1964 - 1968 (2007/10/02)
Naturally occurring kaempferol 3-O-β-D-(6''-O-coumaroyl)glucopyranoside (tiliroside) has been synthesized thereby confirming its structure.This is the first acylated flavonoid glycoside to be synthesized.
O-ACYLATED FLAVONOID GLYCOSIDES FROM THE NEEDLES OF Picea obovata II. 3''- and 6''-ISOMERS OF p-COUMAROYLASTRAGALIN
Zapesochnaya, G. G.,Ivanova, S. Z.,Sheichenko, V. I.,Tyukavkina, N. A.,Medvedeva, S. A.
, p. 141 - 145 (2007/10/02)
Two monoacylated glycosides have been isolated from the needles of Picea obovata - the previously unknown 3''-p-coumaroylastragalin (I) and 6''-p-coumaroylastragalin (II).It has been established that under the conditions of mild saponification and acid hydrolysis isomerization of (I) into (II) and the splitting out of the acid residue takes place.The position of the acyl substituent has been shown by PMR spectroscopy using the INDOR method.The physicochemical characteristics of the acylated glycosides and of their heptaacetates are given.
