查询词典 alkaloids

Result: Five aporphine alkaloids were isolated and identified as: bidebiline A (1), annobraine (2), lanuginosine (3), liriodenine (4), oxostephanosine (5), respectively.

结果：从乙醇提取物中分离鉴定了5个阿朴菲生物碱，分别为是bidebiline A(1)，annobraine(2)，lanuginosine(3)，鹅掌楸碱(liriodenine，4)，oxostephanosine(5)。

Result: Five aporphine alkaloids were isolated and identified as: bidebiline A (1), annobraine (2), lanuginosine (3), liriodenine (4), oxostephanosine (5), respectively.

结果：从乙醇提取物中分离鉴定了5个阿朴菲生物碱，分别为bidebiline A(1)，annobraine(2)，lanuginosine(3)，鹅掌楸碱(liriodenine，4)，oxostephanosine(5)。

Crebanine, which mainly lies in some Stephania plants of Menispermaceae, is an isoquinoline aporphine alkaloids.

中文摘要：克班宁(Crebanine，Cre)是一种异喹啉类阿朴菲型生物碱，主要存在于防己科千金藤属的部分种中。

In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法，我们首先制备於苯环上具有不同种取代基的苯乙醯胺，接著透过Bischler-Napieralski反应进行分子内合环，并利用钌金属对亚胺中间体进行不对称的还原反应，建立出产物中唯一的光学活性中心，最后再利用Heck反应连结两个苯环，就可以顺利得到具有光学选择性的阿朴吩类天然物。

ObjectiveTo establish a method for quantitative determination of the total alkaloids in the root of Ardisia mamillata.

目的建立测定虎舌红总生物碱的含量测定方法。

This study aimed to assess the possibility of a direct effect of betel-nut alkaloids arecoline and arecaidine on cell proliferation and interleukin-6 (IL-6) production by cultured fibroblasts from human normal gingiva, buccal mucosa and oral submucous fibrosis buccal mucosa in vitro.

本研究之目的，在评估槟榔生物碱（ are - coline 与 arecaidine ）作用於健康牙龈、健康颊粕膜以及口腔粕膜下纤维化症之颊粕膜等三种造纤维细胞后，对细胞增殖与介白质一 6 IL-6 ）合成分泌之影响。

OBJECTIVE To establish a new TLC method for identification of some active components alkaloids in Rhizoma Arundo donax L.METHODS Rhizoma Arundo donax L.

目的 建立一种可以同时鉴别芦竹根药材中多种生物碱类成分的方法。

RESULTS In the thin-layer chromatogram of Rhizoma Arundo donax L., the spots of the main alkaloids were round, clear, and well separated.

结果 芦竹根药材薄层色谱图中，各主要生物碱类成分斑点圆整、清晰、分离度好。

However, the area is less studied than other areas of endophyteresearch world wide. Therefore, a series of experiments were carried out in laboratory,glasshouse and field to compare the responses of endophyte infected plants andendophyte free plants of perennial ryegrass varieties to 10 fungal pathogensisolated from turf type ryegrass in Lanzhou. The pathogens used in the experimentswere Alternaria alternata、Bipolaris sorokiniana、Fusarium avenaceum、Curvularialunata、Ascochyta leptospora、Fusarium acuminatum、Fusarium chlamydosporum、Fusarium oxysporum、Fusarium solani and Gliocladium roseum. In addition, someprotective enzymes activity and alkaloids contents of E+ and E- plants were measuredand LpsA gene of the common strain - Lp19 and mutant strain -AR1 of Neotyphodiumlolii were sequenced to identify their ...

本研究在初步明确兰州市坪用黑麦草内生真菌及其病原真菌多样性的基础上，在实验室、温室和田间开展了系列研究，比较了带内生真菌和不带内生真菌的黑麦草在离体和整株条件下对细交链孢、离蠕孢、燕麦镰孢、新月弯孢、小孢壳二孢、锐顶镰孢、厚垣镰孢、尖镰孢、腐皮镰孢和粉红粘帚霉等10种病原真菌的抗病性，测定了E+和E-植株数种保护酶活性及其生物碱含量的变化。

Starting from boldine (56), secoboldine (57) was prepared by ring opening at N6 position. Then the resulting secondary amine, secoboldine (57), was treated with various substituted benzaldehydes, to form a series of diarybutanoid-like tertiary amine alkaloids.

以波尔定碱(boldine， 56)做起始物，在N 6位置做开环反应可以得到次波尔定碱(secoboldine， 57)，再用还原胺化反应在二级胺上接上不同的苯醛，可以得到一系列的三级胺生物碱化合物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。