Electroorganic chemistry. 140. Electroreductively promoted intra- and intermolecular couplings of ketones with nitriles.
摘要:
Electroreduction of gamma and delta-cyano ketones in i-PrOH with Sn cathode gave alpha-hydroxy ketones and their dehydroxylated ketones as the intramolecularly coupled products. Guaiazulene, (-)-valeranone, polyquinanes, dihydrojasmone, methyl dihydrojasmonate, and rosaprostol have been synthesized by utilizing this electroreductive intramolecular coupling of gamma and delta-cyano ketones in one of the key steps. Similarly, electroreduction of a mixture of ketone and nitrile gave the corresponding intermolecularly coupled product. The product obtained by the electroreductive intermolecular coupling of (+)-dihydrocarvone with acetonitrile has been found to be the precursor of an effective chiral ligand for the enantioselective addition of diethylzinc to aldehydes.
Construction of Functionalized Carbocycles Having Contiguous Tertiary Carbinol and All-Carbon Stereogenic Centers
作者:Chennakesava Reddy、Srinivasarao Arulananda Babu、Nayyar Ahmad Aslam、Vadla Rajkumar
DOI:10.1002/ejoc.201201382
日期:2013.4
A highly stereoselective protocol is reported for customizing functionalized carbocyclic building blocks (β-hydroxy esters) and bicyclic lactones with a stereoarray that contains contiguous tertiary carbinol and all-carbon stereocenters. The efficient asymmetric induction and diastereofacial selective addition of allyl and propargyl indiums to hindered α,α-disubstituted cycloalkanones is presented
报告了一种高度立体选择性的协议,用于定制功能化碳环结构单元(β-羟基酯)和双环内酯,其立体阵列包含连续的叔甲醇和全碳立体中心。介绍了烯丙基和炔丙基铟与受阻 α,α-二取代环烷酮的有效不对称诱导和非对映选择性加成。代表性产物的立体化学是从单晶 X 射线晶体结构分析中明确建立的,并提出了一种合理的反应途径来支持高非对映面选择性。
CYCLIC AMIDE DERIVATIVES AS INHIBITORS OF 11 - BETA - HYDROXYSTEROID DEHYDROGENASE AND USES THEREOF
申请人:CONNEXIOS LIFE SCIENCES PVT. LTD.
公开号:US20150158860A1
公开(公告)日:2015-06-11
The present invention relates to certain amide derivatives that have the ability to inhibit 11-β-hydroxysteroid dehydrogenase type 1 (11β-HSD-1) and which are therefore useful in the treatment of certain disorders that can be prevented or treated by inhibition of this enzyme. In addition the invention relates to the compounds, methods for their preparation, pharmaceutical compositions containing the compounds and the uses of these compounds in the treatment of certain disorders. It is expected that the compounds of the invention will find application in the treatment of conditions such as non-insulin dependent type 2 diabetes mellitus (NIDDM), insulin resistance, obesity, impaired fasting glucose, impaired glucose tolerance, lipid disorders such as dyslipidemia, hypertension and as well as other diseases and conditions.
Indium-assisted aluminium-based stereoselective allylation of prostereogenic α,α-disubstituted cycloalkanones and imines
作者:Chennakesava Reddy、Srinivasarao Arulananda Babu、Nayyar Ahmad Aslam
DOI:10.1039/c4ra04293j
日期:——
Al0 for the allylation of a variety of prostereogenic α,α-disubstituted (hindered) cycloalkanones, 1,2-dione-based systems and various imino systems (CN functional groups) is reported. The stereoselective InCl3-catalyzed Al-based allylation of various 2-substituted-2-carbethoxycycloalkanones gave the corresponding products with moderate to excellent diastereoselectivity. The allylation and propargylation
[EN] CYCLIC AMIDE DERIVATIVES AS INHIBITORS OF 11 - BETA - HYDROXYSTEROID DEHYDROGENASE AND USES THEREOF<br/>[FR] DÉRIVÉS D'AMIDE CYCLIQUES À UTILISER EN TANT QU'INHIBITEURS DE 11-BÊTA-HYDROXYSTÉROÏDE DÉSHYDROGÉNASE ET UTILISATIONS DE CEUX-CI
申请人:CONNEXIOS LIFE SCIENCES PVT LTD
公开号:WO2013128465A1
公开(公告)日:2013-09-06
The present invention relates to certain amide derivatives that have the ability to inhibit 11-β-hydroxysteroid dehydrogenase type 1 (11β-HSD-1) and which are therefore useful in the treatment of certain disorders that can be prevented or treated by inhibition of this enzyme. In addition the invention relates to the compounds, methods for their preparation, pharmaceutical compositions containing the compounds and the uses of these compounds in the treatment of certain disorders. It is expected that the compounds of the invention will find application in the treatment of conditions such as non-insulin dependent type 2 diabetes mellitus (NIDDM), insulin resistance, obesity, impaired fasting glucose, impaired glucose tolerance, lipid disorders such as dyslipidemia, hypertension and as well as other diseases and conditions.
1–2 equivalents of water can be performed efficiently by using RuH2(PPh3)4 catalyst to give the corresponding amides. Under the similar reaction conditions, δ-ketonitriles can be converted into the corresponding ene-lactams, which are versatile synthetic intermediates. The efficiency of the reaction is demonstrated by the short-step synthesis of (−)-pumiliotoxin C.