An efficient one-pot protocol for the synthesis of (E)-nitroalkenes by reaction of aldehydes and nitroalkanes in the presence of polymer-bound triphenylphosphine, iodine and imidazole is described. Although the reaction works with similar efficiency with triphenylphosphine and its polymer-bound version, easy removal of the unwanted polymer-bound triphenylphosphine oxide and its recovery as triphenylphosphine provide the edge for practical application of the method. (C) 2013 Elsevier Ltd. All rights reserved.
Novel dihydroquinolizinones for the treatment and prophylaxis of hepatitis B virus infection
申请人:Hoffmann-La Roche Inc.
公开号:US20150210682A1
公开(公告)日:2015-07-30
The invention provides novel compounds having the general formula:
wherein R
1
, R
2
, R
3
, R
4
, R
5
and R
6
are as described herein, compositions including the compounds and methods of using the compounds.
[EN] NOVEL DIHYDROQUINOLIZINONES FOR THE TREATMENT AND PROPHYLAXIS OF HEPATITIS B VIRUS INFECTION<br/>[FR] NOUVELLES DIHYDROQUINOLIZINONES POUR LE TRAITEMENT ET LA PROPHYLAXIE D'UNE INFECTION PAR LE VIRUS DE L'HÉPATITE B
申请人:HOFFMANN LA ROCHE
公开号:WO2015113990A1
公开(公告)日:2015-08-06
The invention provides novel compounds having the general formula (I) wherein R1, R2 R3, R4, R5 and R6 are as described herein, compositions including the compounds and methods of using the compounds in the treatment of the hepatitis B virus.
WingPhos, a C2‐symmetric bisphosphorus ligand with a deep and well‐defined chiral pocket was developed. It has shown high efficiency in the rhodium‐catalyzed asymmetrichydrogenation of (E)‐β‐aryl‐N‐acetyl enamides, cyclic β‐aryl enamides, and heterocyclic β‐aryl enamides. A series of chiral β‐arylisopropylamines, 2‐aminotetralines, and 3‐aminochromans can be synthesized with excellent ee values (nbd=3
WingPhos是一种C 2对称的双磷配体,具有较深且定义明确的手性口袋。在(E)-β-芳基-N-乙酰基酰胺,环状β-芳基酰胺和杂环β-芳基酰胺的铑催化不对称氢化反应中显示出很高的效率。可以合成一系列具有良好ee值(nbd = 3,5-降冰片二烯; TON =周转数)的手性β-芳基异丙胺,2-氨基四氢呋喃和3-氨基苯并二氢吡喃。
Synthesis of Nitroalkenes Involving a Cooperative Catalytic Action of Iron(III) and Piperidine: A One-Pot Synthetic Strategy to 3-Alkylindoles, 2<i>H</i>-Chromenes and<i>N</i>-Arylpyrrole
作者:Swapnadeep Jalal、Soumen Sarkar、Krishnendu Bera、Sukhendu Maiti、Umasish Jana
DOI:10.1002/ejoc.201300172
日期:2013.8
efficient and simple strategy has been developed to synthesize various substituted nitroalkenesinvolving a cooperativecatalytic system of FeCl3 and piperidine. This dual catalytic protocol simultaneously activates both electrophile and nucleophile and works under mild reaction conditions so that many sensitive functional groups were tolerated. Moreover, this cooperativecatalytic reaction is also suitable
[EN] NAPHTHYRIDINE DERIVATIVES AS ALPHA V BETA 6 INTEGRIN ANTAGONISTS FOR THE TREATMENT OF E.G. FIBROTIC DISEASES<br/>[FR] DÉRIVÉS DE NAPHTYRIDINE EN TANT QU'ANTAGONISTES DE L'INTÉGRINE ALPHA V BÊTA 6 POUR LE TRAITEMENT DE MALADIES FIBROTIQUES PAR EXEMPLE
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2016046230A1
公开(公告)日:2016-03-31
A compound of formula (I) or a salt thereof wherein R1 represents a five-membered aromatic heterocycle selected from a N- or a C-linked mono- or di-substituted pyrazole, an N- or a C-linked optionally mono- or di-substituted triazole or an N- or a C-linked optionally mono-or di-substituted imidazole, which five-membered aromatic heterocycle may be substituted by one or two of the groups selected from a hydrogen atom, a methyl group, an ethyl group, a fluorine atom, a hydroxymethyl group, a 2-hydroxypropan-2-yl group, a trifluoromethyl group, a difluoromethyl group or a fluoromethyl group, except that when R1 represents an N-linked mono-or di-substituted pyrazole, R1 does not represent 3,5-Dimethyl-1H- pyrazol-1-yl, 5-Methyl-1H-pyrazol-1-yl, 5-Ethyl-3-methyl-1H-pyrazol-1-yl, 3,5-Diethyl-1H-pyrazol-1- yl, 4-Fluoro-3,5-dimethyl-1H-pyrazol-1-yl, 3-Methyl-1H- pyrazol-1-yl or 1H- pyrazol-1-yl.