452339-71-8Relevant articles and documents
Preparation method for synthesizing vilanterol intermediate by catalysis with modified graphene
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Paragraph 0013-0015, (2019/11/21)
The invention discloses a method for synthesizing a vilanterol intermediate tert-butyl 2-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-carbonylethylcarbamate by catalysis with modified reduced graphene oxide with a high carboxylation edge, and belongs to the technical field of organic catalysis. The method utilizes an acidic catalytic reaction of the relatively large amount of carboxyl groups at the edge of reduced graphene oxide to overcome the disadvantage that an adopted organic strong acid is difficult to recover in the prior art, solve the problem of heterogeneous phase and difficult recyclingapplication of a catalyst, and reduce environmental protection pressure. The catalytic synthesis method adopting graphene is environmentally friendly, and meets requirements of modern green industrial production.
Method for synthesizing Vilanterol midbody by virtue of solid acid catalysis
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Paragraph 0019; 0020; 0021; 0022; 0023; 0024, (2019/04/17)
The invention discloses a method for synthesizing Vilanterol midbody 2-(2,2-dimethyl-4H-1,3-benzodiazepine-6-group)-2-carbonyl ethyl carbamate tert-butyl ester (II) by virtue of solid acid catalysis,which belongs to the technical field of organic catalysis. According to the method, the solid acid is used to catalyze the synthesis of Vilanterol midbody (II),so that the defect in the prior art by adopting organic strong acid can be solved, the recycling of the catalyst is realized, and the pressure of environmental protection can be alleviated. The solid acid catalyzed synthesis route of the invention is environment-friendly and meets the requirements of modern pollution-free industrialized production.
Phenylethanolamine derivative and its preparation method and application
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, (2017/10/07)
The invention relates to a phenylethanolamine derivative represented in the following formula 1. The phenylethanolamine derivative can serve as a beta 2 receptor agonist. The formula can be seen from the description.
PROCESS FOR THE PREPARATION OF VILANTEROL AND INTERMEDIATES THEREOF
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, (2015/09/23)
An improved process for the preparation of vilanterol and pharmaceutically acceptable salts thereof is disclosed. More specifically the improved process for preparing intermediates for the preparation of vilanterol is disclosed.
PHENETHANOLAMINE DERIVATIVES AND THEIR USE IN THE TREATMENT OF RESPIRATORY DISEASES
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Page 43, (2010/02/06)
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.
PHENETHANOLAMINE DERIVATIVE FOR THE TREATMENT OF RESPIRATORY DISEASES
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Page 46, (2010/02/06)
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.
Potassium trimethylsilanolate induced cleavage of 1,3-oxazolidin-2- and 5-ones, and application to the synthesis of (R)-salmeterol.
Coe, Diane M,Perciaccante, Rossana,Procopiou, Panayiotis A
, p. 1106 - 1111 (2007/10/03)
A convenient and efficient method for the cleavage of 1,3-oxazolidin-5-ones and 1,3-oxazolidin-2-ones utilising potassium trimethylsilanolate in tetrahydrofuran is described. The benzyloxycarbonyl-protecting group is readily removed under the reaction conditions, whereas the N-benzoyl group is stable. A synthesis of (R)-salmeterol exploiting the 2-oxazolidinone ring as a protecting group for the ethanolamine moiety is also described.
PHENETHANOLAMINE DERIVATIVES FOR TREATMENT OF RESPIRATORY DISEASES
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Page/Page column 46, (2010/02/07)
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.
PHENETHANOLAMINE DERIVATIVES
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Page/Page column 38, (2010/02/07)
The present invention relates to novel compounds of formula (I), or a salt, solvate, or physiologically functional derivative thereof, 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.