tree fernTwo derivatives of shikimic acid were isolated from croziers of the dwarf tree fern, Dicksonia antarctica, and their structures were elucidated as 4-O-caffeoylshikimic acid and 4-O-(p-coumaroyl)-shikimic acid on the basis of mass spectrometric and NMR spectroscopic evidence....
摘要: Two derivatives of shikimic acid were isolated from croziers of the dwarf tree fern, Dicksonia antarctica, and their structures were elucidated as 4-O-caffeoylshikimic acid and 4-O-(p-coumaroyl)-shikimic acid on the basis of mass spectrometric and NMR spectroscopic evidence....
(Gall)R 1 =OHR 2 =OH Coumaroyl(Cou)R 1 =HR 2 =OH R 1 R 2 O O HO R 1 R 2 cisortrans OleoacteosideR=Hplantasioside OleoechinacosideR=Glc 特殊结构: O RO OC O HO HO O O O O OH OH CH 3 HOOH HO C O OGlc COOCH 3 O O O OHO HO OCf HO OH (二)分布 常与糖、...
5-O-p-coumaroyl shikimic acidcell suspension culture.The partial purification and characterization of p-hydroxycinnamoyl-CoA: shikimate-p-hydroxycinnamoyl transferase (CST) from cell suspension cultures of Cichorium endivia is reported. The enzyme has been purified 126-fold and shows an absolute ...
and a prokaryotic expression vector containing the gene LjC3'H, and also discloses application of the p-coumaroyl ester 3'-hydroxylase gene LjC3'H in lonicera japonica thumb. in preparation of chlorogenic acid. Experiments prove that coumaroyl quinic acid and coumaroyl shikimic acid can be ...