作者:Hai-Li Liu、Xue-Feng Huang、Xiang Wan、Ling-Yi Kong
DOI:10.1002/hlca.200790111
日期:2007.6
LC/MS3-Guided biotransformation of p-coumaric acid (=(2E)-3-(4-hydroxyphenyl)prop-2-enoicacid; CA) with H2O2/Momordica charantiaperoxidase at pH 5.0 and 45° in the presence of acetone has resulted in the isolation of three CA trimers, triCA1 (1), triCA2 (trans-2), and triCA3 (cis-2), and seven CA dimers, diCA1–diCA7, i.e., 3–9, among which seven (triCA1–triCA3 and diCA1–diCA4) are new compounds and
LC / MS 3-在pH 5.0和45°下用H 2 O 2 /苦瓜过氧化物酶对对香豆酸(=(2 E)-3-(4-羟苯基)丙-2-烯酸; CA)的指导生物转化在丙酮的存在导致了三个CA三聚体的分离,triCA1(1),triCA2(反式- 2),和triCA3(顺式- 2),七CA二聚体,diCA1-diCA7,即,3 - 9,其中七个(triCA1-triCA3和diCA1-diCA4)是新化合物,三个(diCA5-diCA7)是已知化合物。通过2D-NMR(例如HSQC,HMBC和NOESY测量)建立结构。还讨论了产品形成的可能机理(方案1-3)。这是首次实现了在体外过氧化物酶催化的对香豆酸的生物转化。化合物triCA3(顺式- 2),diCA1(3),diCA5(7),和diCA7(9)表现出比母体CA.更强的抗氧化活性
COMPOUND, Alpha1 ADRENERGIC RECEPTOR ANTAGONISTIC AGENT, AND COMPOSITION
申请人:Wakimoto Toshiyuki
公开号:US20100004328A1
公开(公告)日:2010-01-07
A novel compound, a novel α
1
adrenergic receptor antagonistic agent, and a novel composition are provided which are capable of exerting a therapeutic effect on treatment of hypertension as well as treatment of prostatic hypertrophy and the like. The compound is represented by the following formula (1):
enantiomer of hordatine A and aperidine from optically pure dehydrodi-p-coumaric acid. Several additional related compounds were also synthesized for structure–activity relationship studies. Chiral column HPLC analysis demonstrated that the absolute stereochemistry of natural hordatine A is (2S,3S), while based on the isomerization mechanism, the stereochemistry of aperidine is (2R,3S). The α1A adrenoceptor