描述了在C-6位含有–COOMe基团的ε-己内酰胺的合成和构象分析。使用X射线晶体学和NMR光谱研究了不同的C-2,C-6和N取代基对环构象的影响。结果提供了所有被分析的己内酰胺都采用带有平面内酰胺的椅子型构象的证据。在6-取代己内酰胺,所述-COOMe残余物倾向于驻留在赤道位置,而且可以被诱导通过引入大体积的占据的轴向取向叔内酰胺氮上的丁氧羰基(BOC)基团或通过C-2 / C-3环去饱和而得到的。通过溶液NMR检测,发现BOC保护的己内酰胺在两种椅子形式之间进行交换,一种形式是C-6酯赤道(30%),另一种是在轴向位置(70%)。后者通过X射线晶体学观察。对于C-2二硫代氨基甲酸酯取代的C-6甲酯七元环,对于两个取代基都为赤道的顺式异构体,观察到单椅子形式。但是,类似的反式异构体以两种椅子形式存在,其平衡比为1,N C 4和4 C 1,N构象异构体,其中任一取代基均可占据轴向或赤道位置。
Synthesis of a bicyclic oxo-γ-lactam from a simple caprolactam derivative
作者:Christian Weck、Franziska Obst、Elisa Nauha、Christopher J. Schofield、Tobias Gruber
DOI:10.1039/c7nj02348k
日期:——
The synthesis of the 6-azabicyclo[3.2.1]octane ring system, via Dieckmann cyclization, is described. Ring closure involves reaction of a caprolactam enolate with a C-6 ester, the reactive axial conformation of which is promoted by the presence of an N-tert-butyloxycarbonyl group on the lactam nitrogen. The results will enable the synthesis of new bridged caprolactams for testing as antibacterials and
Improved Total Synthesis of Indolizidine and Quinolizidine Alkaloids via Nickel-Catalyzed (4 + 2) Cycloaddition
作者:Jonas Renner、Sleight R. Smith、Jacob M. Cowley、Janis Louie
DOI:10.1021/acs.joc.2c00365
日期:2022.7.15
A Ni-catalyzed (4 + 2) cycloaddition of bicyclic 3-azetidinones and alkynes was developed to access indolizidine and quinolizidine alkaloids. A key element was the development of a diazomethylation procedure that allows the efficient synthesis of bicyclic azetidinones from pyroglutamic and 6-oxopiperidine-2-carboxylic acid. A ligand screening led to improved regioselectivity and enantiopurity during
开发了双环 3-氮杂环丁酮和炔烃的 Ni 催化 (4 + 2) 环加成反应来获得吲哚里西啶和喹里西啶生物碱。一个关键因素是重氮甲基化过程的开发,该过程允许从焦谷氨酸和 6-氧代哌啶-2-羧酸有效合成双环氮杂环丁酮。在 Ni 催化的 (4 + 2) 环加成过程中,配体筛选提高了区域选择性和对映纯度。利用这种简单的方法合成 (+)-ipalbidine、(+)-septine、(+)- seco -antofine 和 (+)-7-methoxy-julandine。
Thiophene substituted piperazines useful in the treatment of benign prostatic hyperplasia
申请人:Ortho-McNeil Pharmaceutical, Inc.
公开号:EP1273572A1
公开(公告)日:2003-01-08
This invention relates to a series of heterocyclic substituted piperazines of Formula (I), pharmaceutical compositions containing them and intermediates used in their manufacture. The compounds of the invention selectively inhibit binding to the α-la adrenergic receptor, a receptor which has been implicated in benign prostatic hyperplasia. As such the compounds are potentially useful in the treatment of this disease.
Therapeutically active compounds and their methods of use
申请人:Agios Pharmaceuticals, Inc.
公开号:US10689414B2
公开(公告)日:2020-06-23
Provided are methods of treating a cancer characterized by the presence of a mutant allele of IDH1/2 comprising administering to a subject in need thereof a compound described here.
Novel heterocycles useful in the treatment of benign prostatic hyperplasia
申请人:——
公开号:US20020165219A1
公开(公告)日:2002-11-07
This invention relates a to a series of heterocyclic substituted piperazines of Formula I
1
pharmaceutical compositions containing them and intermediates used in their manufacture. The compounds of the invention selectively inhibit binding to the &agr;-1a adrenergic receptor, a receptor which has been implicated in benign prostatic hyperplasia. As such the compounds are potentially useful in the treatment of this disease.
本发明涉及一系列式 I 的杂环取代的哌嗪类化合物
1
含有这些化合物的药物组合物以及用于制造这些化合物的中间体。本发明的化合物可选择性地抑制与&agr;-1a肾上腺素能受体的结合,该受体与良性前列腺增生症有关。因此,本发明化合物可用于治疗这种疾病。