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Methods Etiracetam was synthesized from 2 - pyrrolidone by N - alkylation and aminolysis.是什么意思？

Methods Etiracetam was synthesized from 2 - pyrrolidone by N - alkylation and aminolysis.

方法 2- 吡咯烷酮经N - 烷基化、氨解反应合成乙拉西坦.

相关词汇
methods etiracetam was synthesized from by alkylation and

methods

n. method的复数：方法，方法( method的名词复数 )，方法论，教学法，分类法；
例句
The old methods weren't adequate to meet current needs...
老一套方法已不足以满足当前的需要。

etiracetam

乙基氧吡咯烷乙酰胺；
例句
Methods Etiracetam was synthesized from 2 - pyrrolidone by N - alkylation and aminolysis.
方法 2- 吡咯烷酮经N - 烷基化、氨解反应合成乙拉西坦.

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；
例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

synthesized

--
例句
Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.
以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；
例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；
例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

alkylation

n. 烷化，烃化；
例句
These derivatives are readily obtained by alkylation of 2 - mercaptopyridine and alkyl halides under alkaline conditions.
这些衍生物可以容易地在碱性条件下通过 2- 巯基吡啶和卤代烷的烷基化而得到.

and

conj. 和，与，而且，于是，然后，因此；
例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
The second world war kindled his enthusiasm for politics...
第二次世界大战激起了他的政治热情。
The young man had big ideas.
这个年轻人有抱负。
Please inform us of your decision and we will act accordingly.
请把你们的决定通知我们,我们会照着去办的.
The birds will winter outside in an aviary...
鸟儿们将在外面的大鸟笼里过冬。
NASA is hedging its bets and adopting both strategies.
美国航空航天局做了两手准备，两套策略双管齐下。
people who have been forcibly removed from their homes
被强行搬迁的人们
She did her chores without prodding.
她自觉地做完了家务。
It was around seven when I finished at the library. I wasn't hungry, but I'd worked up a thirst.
我从图书馆出来时大约是7点。我不饿，但是觉得口渴。
The teacher disbelieved in the marks he got.
老师对他的分数有所怀疑.
Those familiar with Sanders call him a consummate politician.
那些熟悉桑德斯的人都称他为手段高明的政治家。