A method based on the formation of pi-complexes with chlorogenate-like species was proposed for the determination of caffeine in regular (nondecaffeinated) and decaffeinated coffee. Both caffeate and 3,4-dimethoxycinnamate were able to transform caffeine--a neutral species in aqueous solutions--into an anionic
[Chemical constituents of Veronicastrum sibiricum (L.) Pennell].
B Zhou et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 17(1), 35-36 (1992-01-01)
This study reports the 24 h human plasma pharmacokinetics of 3,4-dimethoxycinnamic acid (dimethoxycinnamic acid) after consumption of coffee, and the membrane transport characteristics of certain dimethoxycinnamic acid derivatives, as present in coffee. Eight healthy human volunteers consumed a low-polyphenol diet
Applied microbiology and biotechnology, 52(5), 689-697 (1999-11-26)
Production of ligninolytic enzymes and degradation of 14C-ring labeled synthetic lignin by the white-rot fungus Cyathus stercoreus ATCC 36910 were determined under a variety of conditions. The highest mineralization rate for 14C dehydrogenative polymerizates (DHP; 38% 14CO2 after 30 days)
From 3-(3,4-dimethoxyphenyl)propenic acid chloride and substituted amines and hydrazides, the appropriate amides and hydrazides (Table 1) were synthesized at 60-80 degrees C in the medium of benzene or toluene. The reaction of this chloride with benzaldehyde hydrazone at 70-80 degrees
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