摘要:
A process for the preparation of butane triols is provided. In the process, a malic acid diester is reduced with sodium borohydride in the presence of an ether and an alcohol. Preferably, the malic acid diester is an ethyl or methyl ester, the ether is tetrahydrofuran or bis(2-methoxyethyl) ether (diglyme), and the alcohol comprises ethanol. Advantageously, the reaction is carried out at ambient temperature.
摘要:
A process for the preparation of a substituted aromatic compound in which a chloroaromatic compound and an alkyl-, alkenyl- or aryl-boronic acid ester or anhydride are coupled in the presence of palladium and a lipophilic aliphatic phosphine comprising at least one branched aliphatic group or a lipophilic aliphatic Dis(phosphine). Preferred phosphines include triisopropyl, triisobutyl and tricyclohexylphosphine.
摘要:
The present invention relates to a process of preparing a compound of the following formula III: wherein R1-R4 are as defined herein. The present invention also relates to the preparation of intermediates used to prepare the compound of formula III.
摘要:
The present invention relates to novel compounds of Formula (I), to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use in the prophylaxis and treatment of respiratory diseases.
摘要:
The invention relates to the use of magnesium stearate to inhibit or reduce chemical degradation of an active ingredient substance in a formulation comprising a carrier in a solid pharmaceutical formulation, wherein the active ingredient substance is susceptible to chemical degradation.
摘要:
The present invention relates to a process of preparing a compound of the following formula III: wherein R1-R4 are as defined herein. The present invention also relates to the preparation of intermediates used to prepare the compound of formula III
摘要:
The present invention relates to novel compounds of Formula (I), to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use in the prophylaxis and treatment of respiratory diseases.
摘要:
The present invention relates to novel compounds of formula (I), to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use in the prophylaxis and treatment of respiratory diseases.
摘要:
The present invention relates to novel compounds of Formula (I), to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use in the prophylaxis and treatment of respiratory diseases.
摘要:
2-Benzyloxyalkyl halophenones of the formula (3): wherein X1 and X2 are each independently H, Cl or F, provided that at least one of X1 and X2 is Cl or F; one of R3 and R4 is H and the other is optionally substituted benzyloxy; and R5 is an unsubstituted alkyl, preferably a C1-6 alkyl group. The compounds are useful as intermediates for preparing 2-hydroxyalkyl halophenones.