133337-43-6

Basic information

• Product Name: 5-(1,4-diazepan-1-ylsulfonyl)isoquinoline hydrochloride
• CAS NO: 133337-43-6
• Molecular Formula: C14H18ClN3O2S
• Molecular Weight: 0
• Mol File: 133337-43-6.mol
• Article Data: 7

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 5-(1,4-diazepan-1-ylsulfonyl)isoquinoline hydrochloride(CAS DataBase Reference)
• NIST Chemistry Reference: 5-(1,4-diazepan-1-ylsulfonyl)isoquinoline hydrochloride(133337-43-6)
• EPA Substance Registry System: 5-(1,4-diazepan-1-ylsulfonyl)isoquinoline hydrochloride(133337-43-6)

Safety Data

• Hazardous Substances Data: 133337-43-6(Hazardous Substances Data)

Upstream product

• 105627-79-0 isoquinoline-5-sulfonyl chloride hydrochloride 
• 186544-80-9 C₂₂H₂₃N₃O₄S 
• 84468-15-5 5-isoquinolinesulfonyl chloride 
• 505-66-8 1,4-Diazacycloheptane 
• 27655-40-9 isoquinoline-5-sulfonic acid 
• 7051-16-3 1-chloro-3,5-dimethoxybenzene 
• 103745-39-7 fasudil 

Relevant articles and documents

Unconventional Synthetic Process of Fasudil Hydrochloride: Costly Homopiperazine Was Avoided

An efficient, robust, and cost-effective synthetic process of fasudil hydrochloride 1 was developed. Starting from readily available ethylenediamine and 5-isoquinoline sulfonyl chloride, the target product 1 was prepared through a six-step reaction, including sulfonamidation, protection, nucleophilic substitution, deprotection, cyclization, and salification. The process afforded 1 in 67.1% overall yield (based on 5-isoquinoline sulfonyl chloride) with 99.94% purity. Compared to the earlier published methodologies, the use of homopiperazine or its derivatives as intermediates was avoided. The salient features of this environmentally friendly synthetic route include easily available starting materials and operational simplicity, which could be suitable for large-scale industrial production.

Method for preparing isoquinoline hydrochloride intermediate and Rho kinase inhibitor by using BTC/Ph3PO chlorination system

The invention discloses a method for preparing an isoquinoline hydrochloride intermediate and an Rho kinase inhibitor by using a BTC/Ph3PO chlorination system, which comprises the following steps: putting an isoquinoline 5-sulfonic acid compound, BTC and a catalytic amount of Ph3PO into a reaction bottle, adding an organic solvent A, uniformly mixing all the components, and heating the mixture toreact; after the reaction is finished, carrying out suction filtration and drying to obtain a white solid isoquinoline hydrochloride intermediate, which is the isoquinoline 5-sulfonylchloride hydrochloride compound; concentrating a mother liquor part of the filtrate for separating out Ph3PO at a low temperature, and washing Ph3PO with a low-polarity solvent for recycling use. The method has the advantages of few side reactions, high product quality, less three-waste pollution, high atom economy and the like, the invention also provides a method for further preparing the Rho kinase inhibitor byutilizing the prepared isoquinoline hydrochloride intermediate; the impurities in the Rho kinase inhibitor prepared by the method are obviously lower than those in medicines obtained by a traditionalmethod.

Method for purifying fasudil hydrochloride

The invention provides a method for purifying fasudil hydrochloride. According to the method, diffluent fasudil hydrochloride is converted into slightly soluble fasudil dihydrogen phosphate in a water-methanol solution, so that high-content piperazine impurities, most pigment and other water-soluble impurities which are easily dissolved in water and methanol are removed. The method has controllable process parameters, convenient operation and a mild reaction.