查询词典 methylation

THE FIRST TOTAL SYNTHESIS OF TAXAMAIRIN B Taxamairin B, representive of rare naturally-occuring rearrang-ed 9(10→20)-abeo-8, 11, 13-triene diterpenoids, has been firstsynthesized by a eleven-step route in an overall yield of 8.19%,starting from commercially available catechol and 1,3-cyclohexan-dione. The improved Friedel-Crafts annulation, thermodynamicallycontrolled-geminal pairing methylation, the selective oxidation ofallyl group and the selective reduction of the less-hindrancecarbon-carbon double bond are the key steps.

二。美丽红豆杉素B的全合成研究 1，美丽红豆杉素B的首次全合成以价廉，易得的邻苯二酚和1，3-环己二酮为原料，经过改良的Friedel-Crafts烷基化反应，热力学控制的α，β-不饱和酮结构的α一位双烷基化，烯丙位的选择性氧化，以及选择性还原位阻较小的碳碳双键等十一步反应，以8.19％的总收率首次完成了美丽红豆杉素B的全合成。

METHODS Antiemetic Ondansetron was synthesized from 1,2,3,9-tetrahydro-4H-carbazol-4-one via N-methylation,Mannich reaction and condensation.

方法以1，2，3，9四氢4H咔唑4酮经N甲基化、Mannich反应和缩合得止吐药昂丹司琼。

Previous findings have suggested that methylation of the APC gene may be associated with some tumors including lung cancer.

以前的研究结果表明，甲基化的APC基因可能与某些肿瘤关联，包括肺癌。

The main interest of our laboratory is on proteins with arginine side chain methylation and the subsequent cellular responses.

本实验室的研究重心主要在蛋白质精氨酸支链的甲基化及其后续之细胞反应。

These results indicated some differences from other investigated autopolyploid plants in autopolyploid watermelon. Autotriploid watermelon, in particular, showed unusual characters of genome structure and DNA methylation status, which may be closely associated with the oddploidy effect and the excellent traits present in triploid plants.

综上结果证明，西瓜同源多倍化过程中发生的遗传和表观遗传改变与已报导的一些植物的同源多倍化有所不同，特别是三倍体西瓜，其表现出独特的基因组结构及DNA甲基化状态变化特徵，而这可能与植物的奇倍性效应及三倍体西瓜优良性状的形成密切相关。

Objective To study the effect of betaine on the DNA methylation in HepG2 genome.

目的研究甜菜碱对人肝癌细胞HepG2内基因组范围DNA甲基化的影响。

Methylation of soybean oil catalyzed by whole-cell biocatalyst was studied.

研究了全细胞生物催化剂催化大豆油甲酯化反应制备生物柴油的反应条件。

Objective To detect methylation in p16 gene in whole blood and bronchia rinse of lung cancer,and to explore its significance for early diagnosis in lung cancer.

目的检测肺癌患者支气管灌洗液及全DNA中p16基因甲基化，并探讨其在肺癌早期诊断中的作用。

Objective: To investigate the expression of p16 gene methylation and protein in non-small cell lung cancer.

目的 探讨p16基因甲基化及蛋白在人非小细胞肺癌组织中的表达情况。

Expression of p16 gene methylation and protein was related to the carcinogenesis and development of lung cancer.

p16基因甲基化及蛋白的表达情况与非小细胞肺癌的发生、发展有关。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。