Divergent Enantioselective Synthesis of (−)-Galanthamine and (−)-Morphine
作者:Barry M. Trost、Weiping Tang、F. Dean Toste
DOI:10.1021/ja054449+
日期:2005.10.1
tricyclic intermediate is available in six steps from 2-bromovanillin and the monoester of methyl 6-hydroxycyclohexene-1-carboxylate. This intermediate requires only two steps to convert to (-)-galanthamine. Using a Heck vinylation, we found that the fourth ring of codeine/morphine could be formed. The final ring formation involves a novel visible light-promoted hydroamination. Thus, six steps are required
Total Synthesis of Sporolide B and 9-<i>epi</i>-Sporolide B
作者:K. C. Nicolaou、Jianhua Wang、Yefeng Tang、Lorenzo Botta
DOI:10.1021/ja1048994
日期:2010.8.18
The total synthesis of the structurally unique secondary metabolite sporolide B (1b) is described. The total synthesis of 1b was developed on the basis of preliminary studies that revealed the reactivity of an appropriate o-quinone as a diene system toward a number of indene derivatives as dienophiles, first in intermolecular and thence intramolecular settings. Thus, substrates were devised (37 and
[EN] SUBSTITUTED [1,2,4]TRIAZOLE AND IMIDAZOLE COMPOUNDS<br/>[FR] COMPOSÉS IMIDAZOLE ET TRIAZOLE SUBSTITUÉS EN [1,2,4]
申请人:BASF SE
公开号:WO2014095655A1
公开(公告)日:2014-06-26
The present invention relates to compounds of the formula (I) wherein the substituents are defined in the description and claims, their preparation and uses of the compounds I.
本发明涉及公式(I)中取代基的化合物,其中取代基在描述和权利要求中定义,以及化合物I的制备和用途。
Substituted dienes prepared from betulinic acid – Synthesis, cytotoxicity, mechanism of action, and pharmacological parameters
synthesized from betulinic acid by its oxidation to 30-oxobetulinic acid followed by the Wittig reaction. Cytotoxicity of all compounds was tested in vitro in eight cancer cell lines and two noncancer fibroblasts. Almost all dienes were more cytotoxic than betulinic acid. Compounds 4.22, 4.30, 4.33, 4.39 had IC50 below 5 μmol/L; 4.22 and 4.39 were selected for studies of the mechanism of action. Cell cycle
通过将桦木酸氧化为 30-氧代桦木酸,然后进行 Wittig 反应,合成了一组新的取代二烯。在八种癌细胞系和两种非癌成纤维细胞中体外测试了所有化合物的细胞毒性。几乎所有的二烯都比桦木酸更具细胞毒性。化合物4.22、4.30、4.33、4.39的IC 50低于5 μmol / L ;选择4.22和4.39进行作用机制研究。细胞周期分析显示在 5 × IC 50时凋亡细胞数量增加浓度,其中可以预期导致细胞死亡的不可逆变化的激活。既4.22和4.39导致细胞在用DNA / RNA合成的部分抑制的G0 / G1期的累积为1×IC 50,并在5几乎完全抑制×IC 50。有趣的是,化合物4.39 在 5 × IC 50导致细胞在 S 期积累。较高浓度的受试药物可能比较低浓度抑制更多的脱靶。破坏细胞代谢的机制可以诱导细胞在 S 期的积累。化合物4.22和4.39 均在癌细胞中引发选择性凋亡通过内在途径,
[EN] ETHYLDIAMINE OREXIN RECEPTOR ANTAGONISTS<br/>[FR] ÉTHYLÈNE DIAMINE EN TANT QU'ANTAGONISTES DU RÉCEPTEUR DE L'HYPOCRÉTINE
申请人:MERCK SHARP & DOHME
公开号:WO2016100161A1
公开(公告)日:2016-06-23
The present invention is directed to ethyldiamne compounds which are antagonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.