Development of a novel protocol for chemoselective deprotection of N/O-benzyloxycarbonyl (Cbz) at ambient temperature
摘要:
A novel protocol for the deprotection of N-benzyloxycarbonyl and O-benzyloxycarbonyl groups by nickel boride generated in situ from NaBH4 and NiCl(2)6H(2)O in methanol at room temperature has been developed to give the corresponding amines and phenols. This protocol is chemoselective as groups like chloro, bromo, amide, ester, pyridine, and tert-butyloxycarbonyl moiety are unaffected under these conditions. The deprotection has also been validated in gram scale reactions, to establish the wider appropriateness of this protocol.
Synthesis and evaluation of potent and selective β3 adrenergic receptor agonists containing heterobiaryl carboxylic acids
摘要:
The design, synthesis, and SAR of a novel series of heterobiaryl phenethanolamine beta(3) adrenergic receptor agonists are described. The furan analogue 49 was shown to elicit a significant dose-dependent lowering of plasma glucose in a rodent model of type 2 diabetes. (c) 2007 Elsevier Ltd. All rights reserved.
[EN] CYCLOPROPYLAMINE DERIVATIVES USEFUL AS INHIBITORS OF HISTONE DEMETHYLASES KDM1A<br/>[FR] DÉRIVÉS DE CYCLOPROPYLAMINE UTILES EN TANT QU'INHIBITEURS DE HISTONE DÉMÉTHYLASES KDM1A
申请人:ISTITUTO EUROP DI ONCOLOGIA S R L
公开号:WO2014086790A1
公开(公告)日:2014-06-12
(I) The present invention relates to cyclopropyl derivatives of general formula (I), wherein A, R1, and R2 are as defined in the specification. The present application also relates to pharmaceutical compositions containing such compounds and to their use in therapy.
Rhodium Carbene Routes to Oxazoles and Thiazoles. Catalyst Effects in the Synthesis of Oxazole and Thiazole Carboxylates, Phosphonates, and Sulfones
作者:Baolu Shi、Alexander J. Blake、William Lewis、Ian B. Campbell、Brian D. Judkins、Christopher J. Moody
DOI:10.1021/jo902256r
日期:2010.1.1
Dirhodium tetraacetate catalyzed reaction of α-diazo-β-keto-carboxylates and -phosphonates with arenecarboxamides gives 2-aryloxazole-4-carboxylates and 4-phosphonates by carbene N−H insertion and cyclodehydration. In stark contrast, dirhodium tetrakis(heptafluorobutyramide) catalysis results in a dramatic change of regioselectivity to give oxazole-5-carboxylates and 5-phosphonates. α-Diazo-β-ketosulfones
CYCLOPROPYLAMINE DERIVATIVES USEFUL AS INHIBITORS OF HISTONE DEMETHYLASES KDM1A
申请人:INSTITUTO EUROPEO DI ONCOLOGIA S.R.L.
公开号:US20150315126A1
公开(公告)日:2015-11-05
The present invention relates to cyclopropyl derivatives of general formula (I), wherein A, R
1
, and R
2
are as defined in the specification. The present application also relates to pharmaceutical compositions containing such compounds and to their use in therapy.
Synthesis and evaluation of potent and selective β3 adrenergic receptor agonists containing heterobiaryl carboxylic acids
作者:Barry G. Shearer、Esther Y. Chao、David E. Uehling、David N. Deaton、Conrad Cowan、Bryan W. Sherman、Tula Milliken、Walter Faison、Kathleen Brown、Kimberly K. Adkison、Frank Lee
DOI:10.1016/j.bmcl.2007.05.069
日期:2007.8
The design, synthesis, and SAR of a novel series of heterobiaryl phenethanolamine beta(3) adrenergic receptor agonists are described. The furan analogue 49 was shown to elicit a significant dose-dependent lowering of plasma glucose in a rodent model of type 2 diabetes. (c) 2007 Elsevier Ltd. All rights reserved.