[EN] HETEROBICYCLIC COMPOUNDS AS BETA-LACTAMASE INHIBITORS<br/>[FR] COMPOSÉS HÉTÉROBICYCLIQUES COMME INHIBITEURS DE LA BÊTA-LACTAMASE
申请人:ASTRAZENECA AB
公开号:WO2013150296A1
公开(公告)日:2013-10-10
The present invention is directed to compounds which are beta-lactamase inhibitors. The compounds and their pharmaceutically acceptable salts, are useful in combination with beta-lactam antibiotics, or alone, for the treatment of bacterial infections, including infections caused by drug resistant organisms, including multi-drug resistant organisms. The present invention includes compounds according to formula (Ia): or a pharmaceutically acceptable salt thereof, wherein the values of R1, R 2, R 3 and R 4 are described herein.
1‐disubstituted alkenes via radicaladdition‐anionic cyclization cascade has been successfully developed. Another new protocol based on photocatalytic allylation and cyclopropanation cascade was also described between allylic halide and halomethyl radical. In addition to the successful use of bis‐catecholato silicates as the alkylradical precursors, the acyl and alkylradicals derived from 1,4‐dihydropyridines
We have developed a direct method for the synthesis of cis-substituted cyclopropanes from a cyclopropanecarboxamide through stereocontrolled metalation and Negishi coupling. Under the optimized reaction conditions, various substituents, including di/trisubstituted alkenes and aryl groups, were introduced in a stereoselective manner using a simple amide directing group that could subsequently be converted
A study to reach the diterpenoid (+)-triptoquinone A (3) or its analog (+)-triptinin A (4) via an asymmetric tandem addition to naphthyloxazolines is described. The tandem addition to the chiral dihydronophthalene 6 resulted in a 70% yield of a single diastereomer 10. Further manipulation gave the natural products’ tricyclic ring system, compounds 20 and 29 via ring-closing metathesis in 90% yield, using the Schrock catalyst. Final assault to the target compounds 3 or 4 fell short due to the failure to either reduce a neopentyl hydroxymethyl group to a methyl or to install the conjugated carboxylic acid present in 3 or 4.
[EN] COMPOUNDS FOR THE REDUCTION OF BETA-AMYLOID PRODUCTION<br/>[FR] COMPOSÉS DESTINÉS À LA RÉDUCTION DE LA PRODUCTION DE BÊTA-AMYLOÏDES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2012162334A1
公开(公告)日:2012-11-29
Compounds of formula (I), including pharmaceutically acceptable salts thereof, are set forth herein: wherein R1, R2, R3, R4, R5, and R6 are independently hydrogen, C1-C6 alkyl or C1-C6 cycloalkyl; Y and Z are independently a C6-C10- aryl group or a 5-10 membered heterocyclic group, wherein each Y and Z group can be optionally substituted with from 0-3 substituents selected from halogen, amino, C1-4alkylamino, C1-4dialkylamino, haloC1-4 alkyl, OH, CN, C1-C6 alkyl or cycloalkyl, C1-C6 alkoxy, and C2-C4 alkynyl; L is either a bond or is -NHCO-; L and Z together can be absent; and m is 1, 2 or 3.