摘要:
Provided herein is a novel process for the preparation of phenylcyclopropylamine derivatives, which are useful intermediates in the preparation of triazolo[4,5-d]pyrimidine compounds. Provided particularly herein is a novel, commercially viable and industrially advantageous process for the preparation of a substantially pure ticagrelor intermediate, trans-(1R,2S)-2-(3,4-difluorophenyl)-cyclopropylamine. The intermediate is useful for preparing ticagrelor, or a pharmaceutically acceptable salt thereof, in high yield and purity.
摘要:
The present invention relates, in part, to methods of treatment, prevention, and inhibition of viral disorders. In one aspect, the present invention relates to inhibition of the M2 proton channel of influenza viruses (e.g. influenza A virus) and other similar viroporins (e.g., VP24 of Ebola and Marburg viruses; and NS3 protein of Bluetongue). The present invention further relates, inter alia, to compounds which have been shown to possess antiviral activity, in particular, inhibiting the M2 proton channel of influenza viruses.
摘要:
The present invention relates to a process for preparing substituted 2-nitrobiphenyls and to specific 2-nitrobiphenyls. The invention further relates to a process for preparing 2-aminobiphenyls from such 2-nitrobiphenyls and to a process for preparing (het)arylamides of such 2-aminobiphenyls.
摘要:
An efficient direct functionalization of nitrocubanes has been achieved byrradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.
摘要:
In the preparation of an .alpha.-fluorinated nitroalkane of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and individually represent hydrogen, fluorine, chlorine, bromine, alkyl, halogenoalkyl or cycloalkyl, orR.sup.1 and R.sup.3 have the meaning indicated andR.sup.2 and R.sup.4 together represent an alkylene group having 3-6 carbon atoms,by conjugated nitrofluorination of the corresponding olefin of the formula ##STR2## the improvement which comprises employing about 1.1 mols of hydrogen fluoride and 1 to 2 mols of nitric acid per mol of olefin and carrying out the reaction in the presence of an agent which binds water, e.g. chlorosulphonic acid, fluorosulphonic acid, sulphur trioxide, sulphur dioxide, thionyl chloride, thionyl fluoride, sulfuryl chloride or sulfuryl fluoride. The end products, some of which are known, are useful as intermediates in synthesizing herbicides.
摘要:
An efficient direct functionalization of nitrocubanes has been achieved by irradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.
摘要:
An efficient direct functionalization of nitrocubanes has been achieved by irradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.
摘要:
An efficient direct functionalization of nitrocubanes has been achieved byrradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.