摘要:
The present invention relates to a method for the metal-free preparation of a biaryl compound by a photosplicing reaction and its use in the preparation of chemical compounds, preferably of active ingredients e.g. in the fields of pharmaceuticals and agrochemicals. In particular, it refers to a method for the regiocontrolled preparation of a biaryl compound of formula (I): Ar—Ar′ by photochemically reacting a precursor compound of formula (II): Ar—L—Ar′ to form a biaryl compound of general formula: Ar—L—Ar′(II)→Ar—Ar′ (I) wherein Ar and Ar′, independently of each other, represent an unsubstituted or substituted C6-C20 aryl group or a heteroaryl group with 5-20 ring atoms selected from carbon, nitrogen, oxygen and sulfur, and L represents a group —X—Y—Z— as defined herein. The biaryl compounds are generally suitable as intermediates or key building blocks in a very broad spectrum of organic chemical syntheses and their respective utilities. Their use within the field of synthesis of active ingredients is an aspect of the invention, and their use in the preparation of pharmaceutically active ingredients is particularly preferred.
摘要:
A solid-supported catalyst ligand which chelates palladium (II) species to form a complex that functions as a heterogeneous catalyst that is stable and can be recycled without significantly losing any catalytic activity in a variety of chemical transformations, a method for producing the solid-supported catalyst ligand and a method for catalyzing a palladium cross-coupling reaction, such as the Suzuki-Miyaura, Mizoroki-Heck, and Sonagashira reactions.
摘要:
A solid-supported catalyst ligand which chelates palladium (II) species to form a complex that functions as a heterogeneous catalyst that is stable and can be recycled without significantly losing any catalytic activity in a variety of chemical transformations, a method for producing the solid-supported catalyst ligand and a method for catalyzing a palladium cross-coupling reaction, such as the Suzuki-Miyaura, Mizoroki-Heck, and Sonagashira reactions.
摘要:
A solid-supported catalyst ligand which chelates palladium (II) species to form a complex that functions as a heterogeneous catalyst that is stable and can be recycled without significantly losing any catalytic activity in a variety of chemical transformations, a method for producing the solid-supported catalyst ligand and a method for catalyzing a palladium cross-coupling reaction, such as the Suzuki-Miyaura, Mizoroki-Heck, and Sonagashira reactions.
摘要:
Compounds of the formula I in which R1, R4, R6, R, X1, X2, X3, X4, q and W have the meanings indicated in claim 1, are inhibitors of fatty acid synthase, and can be employed, inter alia, for the treatment of diseases such as cancer, cardiovascular diseases, central nervous system injury and different forms of inflammation.
摘要:
The invention provides small molecule modulators of retinoic acid receptor-related orphan receptors such as RORα, RORβ, or RORγ, of formula with the variable atoms as defined herein and R1 comprising a hydroxyl- or alkoxyl-substituted fluoroalkyl group. Compounds of the invention can be effective modulators at concentrations ineffective to act on LXR receptors, or on other nuclear receptors, or other biological targets. Methods of modulation the RORs and methods of treating metabolic disorders, immune disorders, cancer, and CNS disorders wherein modulation of an ROR is medically indicated are also provided.
摘要:
A process is provided which allows the synthesis of a large number of styrene derivatives with formation of C—C bonds, with use being possible of economically advantageous substrates, readily available carbon nucleophiles, and both inexpensive and environmentally unproblematic catalyst systems, permitting reaction under mild conditions and a high compatibility with functional groups on the reactants involved.
摘要:
Are described compounds of Formula (I) in which R, R′, R″, A, and D have the meanings described in the text, as useful agents in the cure of pathologies characterized by altered angiogenesis and as antitumorals.
摘要:
α- and β-amino acid hydroxyethylamino sulfonamide compounds are effective as retroviral protease inhibitors, and in particular as inhibitors of HIV protease.
摘要:
An intermediate compound for total synthesis of ecteinascidins comprising, a compound represented by general formula 2 having thioether group at C4 site, and the substituent R2 of N12 site is trichloroethoxicarbonyl (Troc) to which various substituents can be introduced by mild condition, further having 10 members ring structure which can be converted to a ring of other numbered members.