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epimer相关的网络例句

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与 epimer 相关的网络例句 [注:此内容来源于网络,仅供参考]

Ursodeoxycholic acid and its epimer chenodeoxycholic acid in synthetic products were determined by thin layer chromatographic scanning.

熊胆是名贵稀有的中药材,其主要成分熊去氧胆酸是溶解胆出醉结石的首选药物。

Tagatose is a C-4 fructose epimer, with 92% of the sweetness of sucrose.

经过测试发现D-塔格糖没有毒性和致癌效应,在食品工业上可以安全使用。

Its epimer 17beta androstenediol does not.

它的异构体17-β雄甾二烯没有这种作用。

In some cases, its epimer 4 was also obtained. 22 compounds were synthesized, among them 18 were new.3. Using the intramolecular Pictet-Spengler reaction to form the pentacyclic skeleton of Et-743, the byproducts 25 were obtained under various conditions. The structures of them were determined to be 1, 2-dihydro-isoquinoline compounds, and the mechanism of the reaction was proposed.B. The synthesis of the analogs of Et-743Because of the failure of removing the protective groups in compounds 14, the synthetic strategy was adjusted.

对于苄基保护的羟基化合物13a,顺利得到化合物30,然后与不同的羧酸反应得到18个酯化合物33-50;对于苄氧羰基保护的氨基化合物13b,由于脱除保护基的化合物31在空气中不稳定,所以我们采取不经分离纯化,直接与羧酸反应得到酰胺化合物53-62,然后再分别对其C-21位的羰基进行还原氰基化,得到10个酰胺目标化合物63-72,另外,我们还对羟基转化为氨基的反应进行了探索。3。

The total synthesis of chrysotricine and its epimer was achieved from tryptophan by ...

合成路线如下: Reagents:a:CH_3CHO,1NH_2SO_4 b:10%K_2Cr_2O_7,HOAc c:1n-BuLi,2Compound 37d:MCPBA。

The efficient first asymmetric syntheses of-6β-hydroxy-7αH-eudesm-4-en-3-one, and its C-6 epimer were achieved starting from-dihydrocarvone, whichprovide a novel and efficient synthetic method to 6-oxgenated eudesmanes.

以-二氢香芹酮为原料,经五步反应,首次完成了6β-羟基-4(5)-烯-3-羰基桉烷及其6位差向异构体的立体选择合成,并为C-6位含氧官能团取代桉烷类化合物的合成提供了一种简便有效的方法。

推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。