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- Alltrans farnesol was synthesized through six steps starting from geraniol in an overall yield of 30%.The key step was the regioselective alkylation of methyl isopropyl ketone. 以香叶醇为起始原料，经6步反应，以总收率30%25完成了全反式法呢醇的全合成.;合成的关键步骤是甲基异丙酮的区域选择性烷基化
- The modified semisynthetic process development of idarubicin was achieved in eight steps starting from daunorubicin. 以柔红霉素为原料;经八步反应制得盐酸伊达比星;总收率为24.;2%25。
- These steps start the Debian boot loader which will display a menu page for you to select a boot kernel and options. 这些步骤启动的Debian引导器会显示一个菜单页用于选择启动内核和选项。进入选择启动内核和选项。
- As with option 1, these steps start the Debian boot loader which will display a menu page for you to select a boot kernel and options. 与选项1相同,这些步骤也会启动Debian引导器,显示一个菜单页供选择启动内核和参数。
- MethodsThe synthetic route consisted of three steps starting from resorcinol and phenylacetic acid and went through acylation, cyclization, and etherification. 方法以间苯二酚和苯乙酸为原料,经酰化、环合及醚化三步反应进行合成。
- I am starting to bald noticeably. 我头顶明显地开始变秃了。
- He stepped up so as to be able to speak. 为看得更清楚，他上到高处。
- My boss was too old to work well. He stepped down. 我的老板年龄太大，做不好工作了，他上星期离了职。
- The man stepped in and asked for my father. 那个人走进来求见我父亲。
- She stepped aside to let them pass. 她站到一边让他们走过去。
- The ice cracked as I stepped onto it. 我一踩冰就裂了。
- The sex pheromone of American White Moth. Hyphamtria cunea D. (3Z, 6Z)-9S, 10R-epoxy-heneicosadiene (1) was synthesis in an overall yield of 16.8% over 10 steps starting from a divinylcarbinol 6. 本文报道合成美洲白蛾性信息素(3Z;6Z)-9S;10R-环氧-二十一碳双烯(1)的路线.;从双乙烯甲醇出发;经过十步合成到1;总得率为16
- He bounced into the room with a springy step. 他以轻快的跑步跳进房间。
- Time the job or step started. 作业或步骤开始的时间。
- He stepped on to the sidewalk from the bus. 他从公共汽车走下到人行道上。
- They stepped out of the sun into the coolness. 他们到阴凉处躲避烈日。
- They stepped over his prone body. 他们从他俯卧的身体上踩过去。
- The family is starting to disintegrate. 这个家庭要破裂了。
- He stepped aside to let me pass. 他站到一边让我过去。
- Starting applications from Program Manager is easy. 在程序管理器下运行应用程序很容易。
