epimer ['epimə]

epimer的基本解释

n.

[化]差向(立体)异构体, 差位(立体) 异构体

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。

与epimer相关的网络解释 [注：此内容来源于网络，仅供参考]

epimer：差向异构体

睾丸素经由五甲型还原酵素II型转化后,会形成二氢睾丸脂酮(DHT),外睾丸素是一种差向异构体(epimer)荷尔蒙,它和睾丸素正好相反,无法转化为DHT. 因此,外睾丸素可以对抗睾丸素,抑制五甲型还原酵素. 外睾丸素的比例较高时,

epimer：差向异构体[其多个不对称中心之一为相反构型]

epigenesis 后成论,渐成论 | epimer 差向异构体[其多个不对称中心之一为相反构型] | epimerase 差向异构酶

epimer：表异构物

303 癫 epilepsy | 304 表异构物 epimer | 305 表异构 epimerase

epimer：差向异构物;表异构物

epimerase 差向异构酶;表异构酶 | epimer 差向异构物;表异构物 | epilator 脱毛剂