452339-70-7Relevant articles and documents
Phenylethanolamine derivative and its preparation method and application
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Paragraph 0054; 0073-0074, (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.
PHENETHANOLAMINE DERIVATIVES AND THEIR USE IN THE TREATMENT OF RESPIRATORY DISEASES
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Page 42-43, (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.
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.