2545-00-8Relevant articles and documents
General synthesis of epi-series catechins and their 3-gallates: Reverse polarity strategy
Ohmori, Ken,Yano, Takahisa,Suzuki, Keisuke
supporting information; experimental part, p. 2693 - 2696 (2010/08/21)
A general synthetic route to the epi-series catechins was developed based on the reverse polarity strategy. Aromatic nucleophilic substitution reaction followed by the sulfinyl-metal exchange and cyclization enabled stereo-controlled access to various members of epi-series catechins and their 3-gallates.
New oligomeric proanthocyanidine from Ziziphus jujuba
Malik, Aibek,Kuliev,Akhmedov,Vdovin,Abdullaev
, p. 40 - 42 (2007/10/03)
Chemical and spectral data establish the structure of an oligomeric proanthocyanidine PZ-5 isolated from Ziziphus jujuba.
(+)-AFZELECHIN 3-RHAMNOSIDE FROM CASSIPOUREA GERRARDII
Drewes, Siegfried E.,Taylor, Craig W.,Cunningham, Anthony B.
, p. 1073 - 1075 (2007/10/02)
A new flavanol glycoside has been isolated from the bark of Cassipourea gerrardii.Its structure has been established from spectroscopic and hydrolytic studies as (+)-afzelechin 3-O-α-L-rhamnopyranoside.Delayed homonuclear COSY studies show up interesting long-range couplings between specific protons. Key words: Cassipourea gerrardii; Rhizophoraceae; bark; (+)-afzelechin 3-O-α-L-rhamnopyranoside.