摘要:
The invention relates to a novel group of iminc compounds and a process for their preparation, useful in the preparation of tri-substituted imadazoles having multiple therapeutic properties.
摘要:
A catalyst for the polymerisation and copolymerisation of 1-olefins is disclosed which comprises
1) a late transition metal complex 2) optionally an activating quantity of an activator compound, and 3) a support which has been impregnated with titanium or aluminium, and calcined at a temperature of between 200°C and 1000°C, said calcining being after impregnation in the case of aluminium.
摘要:
Compounds of formula (I), wherein: A1 and A2 each represent independently of one other an aryl or a heteroaryl radical; and A1 where appropriate is substituted with substituent (R3a)n1 and A2 where appropriate with substituent (R3b)n2; n1 and n2 are independently of one another 0, 1, 2, 3 or 4; and either R3a and R3b independently of one another are for example halogen, C1-C6alkyl, C2-C4alkinyl, halogen-C1-C6alkyl, halogen-C2-C4alkinyl, C1-C6alkoxy, halogen-C1-C6alkoxy, C2-C6alkenyloxy, C2-C6alkinyloxy or halogen-C2-C6alkenyloxy; and R2 is R2a; R2a is for example -C1-C6alkyl-NR11R12, -COC9-C20alkyl, -C1-C6alkyl-O-C1-C6alkyl-O-C1-C6alkyl or -CH2O(C=O)C1-C6alkyl; or, at least one of the radicals R3a or R3b is -CR5=CR5R14, -NR11R12, -C(=O)CN, -C(=O)C(=O)O-C1-C6alkyl, -CR7=NOR10, or a five or six-membered heteroaryl ring bonded by a carbon atom; R2 is R2a or R2b, wherein R2a is as defined hereinbefore; and R2b is for example hydrogen, -OH, C1-C6alkyl or C1-C6alkoxy; R14 is for example hydrogen, halogen, C1-C6alkyl or halogen-C1-C6alkyl; X is O or S; p is 0, 1 or 2; R5 is independently H or C1-C8alkyl; R6 is for example independently H, C1-C8alkyl or C3-C6cycloalkyl; R7 is for example H, C1-C8alkyl, C2-C8alkenyl or halogen-C1-C8alkyl; R8 is for example C1-C8alkyl, C1-C8alkenyl or halogen-C1-C8alkyl; R9 is C1-C6alkyl, halogen-C1-C4alkyl or aryl; R10 is H, C1-C6alkyl, C3-C6cycloalkyl, phenyl or benzyl; R11 and R12 for example are independently of one another H, C1-C6alkyl or phenyl; and where applicable the possible E/Z isomers, E/Z isomer mixtures and/or tautomers thereof, in free form or in agrochemically acceptable form, can be used as agrochemical active ingredients and may be prepared in a known manner.
摘要:
New biologically active substances are described which inhibit the cellular formation of niacinamide mononucleotide, an essential intermediate of the NAD(P) biosynthesis in the cell. These substances can represent the active ingredient of a pharmaceutical composition for the treatment of cancers, leukaemias or for immunosuppression. Furthermore, screening methods are described as a tool for detecting the above active substances, and for examination of a given cell type for its dependency on niacinamide as a precursor for NAD synthesis.
摘要:
Compounds of the formula (I) ACH(R1)CH(R2)C(=X)N(R3)R4, wherein A is an unsubstituted or substituted heterocyclyl group; R1 is hydrogen or alkyl; R2 is hydrogen or alkyl; R3 is hydrogen or alkyl; R4 is hydrogen, C(=O)R5 or an unsubstituted or substituted alkyl, alkenyl, alkynyl or cycloalkyl group; R5 is alkyl, alkoxy, N(R6)R7 or an unsubstituted or substituted aryl, aryloxy or benzyloxy group; R6 is hydrogen, alkyl or unsubstituted or substituted aryl; R7 is hydrogen, alkyl or unsubstituted or substituted aryl; and =X is =C(H)NO2, =NCN or =NNO2, and, where applicable, tautomers thereof, in each case in free form or in salt form, can be used as agrochemical active ingredients and can be prepared in a manner known per se.
摘要:
The present invention provides a linker binding carrier for organic synthesis represented by the formula:
Ⓐ ― Y ― Z ― W - (SO 2 X)m
wherein
Ⓐ
is a carrier, X is a leaving group, Y is a bond or spacer, Z is a bivalent group, when Z is a bivalent electron attractive group, W is an aromatic ring which may be substituted and when Z is a bivalent non-electron attractive group, W is an aromatic ring which is substituted by an electron attractive group and may be further substituted and m is 1 or 2, or a salt thereof, which is useful for synthesizing a novel organic compound.
摘要:
Process for the preparation of 2-methoxyimino-2-arylacetic esters of formula (I) in which R is C1-C12alkyl, which comprises reacting an appropriately substituted boronic acid of general formula (II) or the trimeric form (III) herein, which is in equilibrium with it, in the presence of a Pd catalyst, with a methoxyiminoacetic ester of formula (IV) in which R is C1-C12alkyl and X is a leaving group. According to a further process variant, in principle the groups which split off the two reactants may change places. The process can be applied not only to phenyl derivatives but also to larger ring systems (naphthyl, pyridyl, heterocycles).