摘要:
Provided is a method for reprocessing neuromuscular blocking agents containing a quaternary ammonium salt, e.g., Rocuronium bromide, using a novel dealkylation method. The process is effective in obtaining a highly pure product from a contaminated starting material by heating, optionally in the presence of an organic solvent, to produce a dealkyated product. The dealkylated product is purified, e.g., by crystallization, and converted by any known method to a stable, highly-pure neuromuscular blocking agent.
摘要:
Processes are provided herein for the preparation of pure rocuronium bromide and for the purification of impure rocuronium bromide obviating the need for column chromatography and that can be easily, conveniently and inexpensively scaled-up.
摘要:
A novel process for preparing (2β,3α,5α,16β,17β)-17-acetoxy-3-hydroxy-2-(4-morpholinyl)-16-(1-pyrrolidinyl) androstane, a known intermediate in the synthesis of the skeletal muscle relaxant rocuronium bromide, is disclosed.
摘要:
A process for the preparation of Terbinafine and salts thereof by reacting 1-chloro-6,6-dimethylhept-2-en-4-yne and N-methyl-N-(1-naphthylmethyl)amine in a basic aqueous medium is disclosed. Also disclosed is a process for the preparation of 1-chloro-6,6-dimethylhept-2-en-4-yne.
摘要:
A novel process for preparing (2β,3α,5α,16β,17β)-17-acetoxy-3-hydroxy-2-(4-morpholinyl)-16-(1-pyrrolidinyl)androstane, a known intermediate in the synthesis of the skeletal muscle relaxant rocuronium bromide, is disclosed.