摘要:
The present invention relates to kinetic resolution of racemic ´ -hydroxyl ester via asymmetric catalytic hydrogenation and an application thereof. In the presence of chiral spiro pyridyl phosphine ligand Iridium catalyst and base, racemic ´-hydroxyl esters were subjected to asymmetric catalytic hydrogenation to obtain extent optical purity chiral ´-hydroxyl esters and corresponding 1,5-diols. The method is a new, efficient, highly selective, economical, desirably operable and environmentally friendly method suitable for industrial production. An optically active chiral ´ -hydroxyl ester and 1,5-diols can be obtained at very high enantioselectivity and yield with relatively low usage of catalyst. The chiral ´ -hydroxyl ester and 1,5-diols obtained by using the method can be used as a critical raw material for asymmetric synthesis of chiral drugs (R)-lisofylline and natural drugs (+)-civet, (-)-indolizidine 167B and (-)-coniine.
摘要:
The present invention relates to fungicidal N-hetarylcarbonyl-2-(benzocycloalken-1-yl)piperidines or pyrrolidines of formula (I), and their thiocarbonyl derivatives, wherein A represents a carbo-linked, unsaturated or partially saturated, 5-membered heterocyclyl group that can be substituted by up to four groups R that can be the same or different; T represents 0 or S; n represents 1 or 2; m represents 1, 2 or 3; p represents 1, 2, 3 or 4, L1 and L2 independently represent CZ4Z5, NZ6, 0, S, S(O) or S(0)2; and R and Z1-Z6 are as defined in the claims; their process of preparation and intermediate compounds for their preparation, their use as fungicides, particularly in the form of fungicidal compositions and methods for the control of phytopathogenic fungi of plants using these compounds or their compositions.
摘要:
A compound having formula (I). R1, R2, R3 and R4 are independently H or lower alkyl. R5 is aryl, heteroaryl, cycloalkyl, heterocycloalkyl, aryloxy, heteroaryloxy, cycloalkyloxy, heterocycloalkyloxy, arylamino, heteroarylamino, cycloalkylamino, heterocycloalkyl amino, arylthio, heteroarylthio, cycloalkylthio, heterocycloalkylthio, or cyclic olefin, any of which may be substituted or non-substituted; or substituted alkyl, substituted alkyl oxy or substituted alkyl amino wherein the substituent is an aryl, a heteroaryl, a cycloalkyl, a heterocycloalkyl or a cyclic olefin, any of which may be substituted or non-substituted. X is C or N. n and p are independently whole numbers selected from 0,1 and 2. (CH2)n and (CH2)P may be substituted or non-substituted. Ar1 and Ar2 are independently aryl or heteroaryl groups which may be substituted or non-substituted. Certain specific compounds are excluded. The compounds can be used in a medicament or a method for the reduction or prevention of the emission of sperm, or for the reduction or prevention of transmission of viral agents-transmitted in seminal fluid.
摘要:
The invention provides a compound of formula (I), wherein R?1, R2, R3¿, and Y have any of the meanings defined in the specification; as well as a pharmaceutical composition comprising a compound of formula (I); intermediates and methods useful for preparing a compound of formula (I); and therapeutic methods for treating drug addiction, Parkinson's disease or depression comprising administering a compound of formula (I), to a mammal in need of such treatment.
摘要:
Derivatives of sulindac are provided along with-pharmaceutical compositions containing them and use for precancerous conditions and treating cancer. Derivatives of sulindac are also suitable for treating chronic inflammatory conditions. A method for preparing the derivatives is also provided.
摘要:
One aspect of the present invention relates to heterocyclic compounds formula A; whereof the substituents are defined in the description. A second aspect of the present invention relates to the use of the heterocyclic compounds as ligands for various mammalian cellular receptors, including dopamine, serotonin, or norepinephrine transporters. The compounds of the present invention will find use in the treatment of numerous aliments, conditions and diseases which afflict mammals, including but not limited to addiction, anxiety, depression, sexual dysfunction, hypertension, migraine, Alzheimer's disease, obesity, emesis, psychosis, schizophrenia, Parkinson's disease, inflammatory pain, neuropathic pain, Lesche-Nyhane disease, Wilson's disease, and Tourette's syndrome. An additional aspect of the present invention relates to the synthesis of combinatorial libraries of the heterocyclic compounds, and the screening of those libraries for biological activity, e.g., in assays based on dopamine transporters.
摘要:
Compounds of general formula (I) are described, wherein Ar is (a) a phenyl group substituted with a halogen atom or (b) a group of general formula (I'), wherein X is a group of formula -CH2-, -(CH2)2- or -(CH2)3- and Z is a hydrogen or halogen atom or a methyl group, Y is a group of formula -CH2-, -CO- or -CHOH-, R1 is a hydrogen atom or a methyl group, R2 is a C3-C7 cycloalkyl group, and n is 0, 1, 2 or 3. Said compounds are useful in therapeutical applications as neurotrophic and neuroprotective agents.
摘要:
The invention is a 2H-1-benzopyran-2-on compound represented by the formula (1) :
and a colorless ultraviolet absorber consisting of the compound, and a thermoplastic resin composition and formed article comprising said ultraviolet absorber, and can provide a thermoplastic resin composition and a formed article of the composition which have excellent heat stability and sublimation resistance, comprise a non-coloring ultraviolet absorber, and are excellent in ultraviolet barrier property.