All - E long chain part was synthesized from solanesol, then condensed with the reductive product of 2,3 - dimethoxy - 5 - methyl -1,4- benzoquinone in the presence of dry ZnCl2.
首先以茄尼醇合成全反式侧链四十碳十烯-1-醇，再和2，3-二甲氧基-5-甲基-1，4-苯醌的还原产物在无水氯化锌存在下缩合。
The streptomycin molecule is composed of three moieties i. e. streptose, streptidine and N-methyl-L-glucosamine.
链霉素是由链霉糖、链霉胍和N甲基一L一葡萄糖胺三部分组成。
The reaction mechanism of 4-methyl-5-ethenyl-heptanitril e oxide cycloaddition is studied with the molecular orbital AM1 method and transit ion state theory.
用过渡状态理论和量子化学AM1方法，对4 甲基5 烯庚腈氧化物环加成反应机理进行了研究。
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