New orally active enkephalinase inhibitors: their synthesis, biological activity, and analgesic properties
摘要:
A series of (4S)-4-[(2S)-benzyl-3-mercaptopropionylamino]-4-(N-phenylcarbamoyl)-butyric acids has been identified as potent systemically active enkephalinase inhibitors. Structure-activity relationships (SAR) are discussed. Further chemical modification of the inhibitors was carried out in order to identify the inhibitors which are orally active in an animal model. Compounds of particular interest are the prodrug-like analogues, including 5b (ONO-9902). Their analgesic effects after oral administration were evaluated. (C) 1998 Elsevier Science Ltd. All rights reserved.
Pd-Catalyzed Threefold Arylation of Baylis-Hillman Bromides and Acetates with Triarylbismuth Reagents
作者:Maddali L. N. Rao、Somnath Giri
DOI:10.1002/ejoc.201200543
日期:2012.8
alkyl 2-benzylacrylates and 2-benzylacrylonitriles were synthesized by means of atom-economic cross-couplings of Baylis–Hillmanbromides or acetates with BiAr3 under palladium-catalyzed conditions. These reactions, involving threefold aryl couplings using BiAr3 reagents with bromides and acetates, are fast and are completed in 1–2 h with high product yields.
EP2/4 compounds having improved dual pharmacological activity are described. The uniqueness of using EP2/4 dual agonists resides in their ability to modify both uveoscleral outflow via the ciliary muscle and conventional outflow via trabecular meshwork and Schlemm's canal all in the same treatment paradigm. The compounds can be employed for the treatment of glaucoma and ocular hypertension. Formula (I).
作者:Manickam Bakthadoss、Tadiparthi Thirupathi Reddy、Vishal Agarwal、Duddu S. Sharada
DOI:10.1039/d1cc06097j
日期:——
of two same molecules via dual C–Hbondactivation in an intermolecular fashion has been developed using a distal ester-directing group. This new coupling reaction led to the synthesis of the highly functionalized 1,3-diaryl molecular architecture in very good yields and with high chemo- and regioselectivities. In addition, using ester as the distal directing group, orthoC–H olefination of α-methyl
Ru–Mg promoted reductive cross-coupling of allyl bromides and alkenes to synthesize 1,7-octadienes with an all-carbon quaternary center
作者:Shurong Zhang、Xinjie Zhao、Guiping Qin
DOI:10.1039/d4ob00116h
日期:——
A Ru-promoted reductive cross-coupling of allylbromides and electron-deficient alkenes to provide terminal 1,7-octadienes with magnesium as a reductant is reported herein. This approach enables the facile construction of a series of complex terminal 1,7-octadienes with an all-carbon quaternary center under mild reaction conditions, and the synthetic utility of the current method has been demonstrated