neolignans 英[ni':ɒlɪɡnænz] 美[ni'ɒlɪɡnænz] 释义 新木脂素类
neolignans 新木脂素类 最新单词 chaldea是什么意思 n. 古王国名 chaldaic的意思 a. 占星术的 chalcotrichite怎么翻译及发音 毛赤铜矿 chalcostibite是什么意思 硫铜锑矿 chalcosine是什么意思 辉铜矿 chalcosiderite的中文意思 磷铜铁矿 chalcopyrrhotite是什么意思及用法 铜磁黄铁矿 chalcopyrite的中文释义...
1) neolignans 新木脂素类例句>> 2) neolignan 新木脂素 1. Enantioselective synthesis of 8-O-4' neolignans (-)machilin D and virolin; 8-O-4'新木脂素(-)Machilin D和Virolin的不对称全合成 2. Enantioselective synthesis of 8-O-4 neolignans (-)machilin D and virolin; 8-O-4 新...
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摘要: Six new constituents comprising three 2-phenyldihydrobenzofuranpropanol-type neolignans, two 1-phenyl-2-phenoxypropane-1,3-diols, and 4- O -(2-hydrox关键词: ILLICIUM-DIFENGPI ILLICIACEAE BARK NEOLIGNAN, 2-PHENYLDIHYDROBENZOFURANPROPANOL GLYCEROL GLYCERIC ACID ...
Scale-up separation of the active subfractions using semi-preparative RP-HPLC provided 13 phenylpropanoid compounds, including O-styrenylneolignans, hyprhombins A–C, epihyprhombin B, and hyprhombin B methyl ester, and O-caffeoylnorneolignans, hyprhombins D and E. All of these compounds shared...
neolignans, generated by oxydative dimerization of propenylphenol and/or allylphenol, undergo further modifying steps. these biosynthetic reactions, confirmed in vitro, include cope, retro-claisen and claisen rearrangements. additionally acid catalysis effects convertions of bicyclo [3.2.1] octanoid neolig...
The trunk wood of an Amazonian Nectandra (Lauraceae) species contains one bicyclo[3.2.1]octanoid and four hydrobenzofuranoid neolignans. The latter comprise representatives of the mirandin, the rearranged burchellin and the burchellin types. The former was characterized as (1S, 4R, 5S, 6R, ...
Nomenclature of lignans and neolignans(IUPAC Recommendations 2000)Abstract:Lignans and neolignans are a large group of natural products character-ized by the coupling of two C6C3units. For nomenclature purposes the C6C3unitis treated as propylbenzene and numbered from 1 to 6 in the ring, starting...
Isolation and structures of two novel neolignans, asatone (1) and isoasatone (2), are described. The structure of the latter, established by means of an X-ray crystallographic analysis of its dihydroxy derivative, is in full agreement with its chemical and spectral data. From a biogenetic po...