C.I.酸蓝281 在
rat pooled S9 fraction 、 cofactor I 作用下,
以
二甲基亚砜 为溶剂,
反应 24.0h,
生成 sesaminol 6-catechol
参考文献:
名称:
Identification and Characterization of Sesaminol Metabolites in the Liver
摘要:
Sesame seeds contain a number of antioxidants, such as sesamin, sesamolin, sesaminol, and sesaminol glucosides. Sesaminol triglucoside was reported to suppress oxidative stress in vivo, but little is known about the metabolism of this potentially important compound. Therefore, we have studied the metabolites of sesaminol formed in the rat liver S9 mix and excreted in the liver of rats ingesting sesaminol triglucoside for 24 h. Nuclear magnetic resonance (NMR) and mass spectrometry (MS) analyses revealed that rat liver S9 mix transformed the sesaminol into a catechol-type metabolite. On the basis of a previous study with sesame lignans by culturing the genus Aspergillus, sesaminol-6-catechol was identified as the major metabolite. Sesaminol was further converted into 5 ''-methylated sesaminol-6-catechol by catechol-O-methyltransferase. Moreover, we successfully detected these metabolites in the liver of rats ingesting the sesaminol triglucoside.
Furofuran lignans as a new series of antidiabetic agents exerting α-glucosidase inhibition and radical scarvenging: Semisynthesis, kinetic study and molecular modeling
A newseries of furofuran lignans containing catechol moiety were prepared from the reactions between lignans and a variety of phenolics. All 22 products obtained were evaluated against three different α-glucosidases (maltase, sucrase and Baker's yeast glucosidase) and DPPH radical. Of furofuran lignans evaluated, β-14, having two catechol moieties and one acetoxy group, was the most potent inhibitor
23 diverse furofuran lignans. On examination their inhibitions against α-glucosidase and free radicals, lignans having a free hydroxy group showed considerably enhanced inhibition, compared with their corresponding starter 4 and related lignans sesamin (1) and sesamolin (3). In addition, the mechanism underlying the α-glucosidase inhibition of a particular active lignan (epi-6) was verified to be mixed
opyranosyl sesaminol, STG) is a physiologically active substance obtained abundantly from defatted sesame cake. Since, the industrial preparation of sesaminol from STG has not been reported previously, the aim of this research was to prepare sesaminol by hydrolysis of STG using β‐glucosidase and cellulase. Under the optimal conditions of total enzyme dosage 100 μL (8,000.72 U), the ratio of β‐glucosidase
芝麻素三糖苷(即2,6 - O - di (β- d-吡喃葡萄糖基)-β- d-葡萄糖吡喃糖基芝麻胺(STG)是一种从脱脂芝麻饼中大量获得的生理活性物质。由于以前没有关于从STG制备芝麻素的工业报道,因此本研究的目的是使用β-葡萄糖苷酶和纤维素酶通过水解STG制备芝麻素。在总酶剂量为100μL(8,000.72 U)的最佳条件下,β-葡萄糖苷酶和纤维素酶的比例为20:80(v / v)(0.72:8,000,U / U),反应时间为24 h,底物浓度为6 mg / mL,反应温度50℃,反应体系pH 4.8,芝麻素的收率为48.9%。此外,通过高效液相色谱和电喷雾电离/质谱法成功测定了芝麻素和其他水解产物(芝麻素二葡萄糖苷和芝麻素单糖苷)。
Stereocontrolled Total Syntheses of Optically Active Furofuran Lignans
Plant products (+)-sesamin, (+)-sesaminol, (+)-methylpiperitol, (+)-aschantin, and (+)-5'-hydroxymethylpiperitol were synthesized in a highly stereocontrolled manner through L-proline-catalyzed bifunctional-urea-accelerated cross-aldol reaction, followed by biomimetic construction of the furofuran lignan skeleton through a quinomethide intermediate.
Acidic Transformation of Sesamolin, the Sesami-oil Constituent, into an Antioxidant Bisepoxylignan, Sesaminol