US 9,975,864 B2 · Preparation of cobicistat intermediates

Abstract

The present disclosure provides crystalline piperidine sulfamoyl intermediates of formula 8 and 9. The present disclosure also relates to an improved process for the preparation of cobicistat using compounds of formulae 8 and 9.

Claims3

Dependent claims

A crystalline piperidine sulfamoyl dimer of formula 8

Dependencies are inferred from the claim text.

Facts

Application

15/100,361Filed 2 Dec 2014

Priority

IN 5570/CHE/20133 Dec 2013

Published

US 2016/0297780 A113 Oct 2016

Granted

22 May 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C07D 295/26
With hetero atoms directly attached to ring nitrogen atoms: sulfur atoms
C07D 203/24
With hetero atoms directly attached to the ring nitrogen atom: sulfur atoms
C07D 417/12
Containing two hetero rings: linked by a chain containing hetero atoms as chain links
C07B 2200/13
Indexing scheme relating to specific properties of organic compounds: crystalline forms, e.g. polymorphs

Preparation of cobicistat intermediates

Life of this patent

Abstract

Claims3

Preparation of cobicistat intermediates

Life of this patent

Abstract

Claims3