89614-56-2Relevant articles and documents
On the formation of a side product with hexahydroaporphine-like structure in the Grewe cyclization of dextromethorphan
Zhao, Qiao,Zhao, Kai,Wu, Sheng-ying,Tian, Bo-xue,Eriksson, Leif A.,Wang, Li-min,An, Na,Long, Zhong-zhu,Cai, Shui-hong
, p. 1689 - 1708 (2017/02/15)
Factors leading to the formation of a hexahydroaporphine-like cyclizing side product were studied systematically for the first time and the ratio of this side product was controlled effectively. To understand better the electronic effect of substrates on the formation of side products, different 1-benzyloctahydroisoquinolines with substituted groups on nitrogen or benzene ring were compared. A plausible mechanism of cyclizing reaction was proposed, and key intermediates as well as transition states were analyzed using DFT calculations.
COMPOSITIONS AND METHODS FOR THE TREATMENT OF RESPIRATORY DISORDERS
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Paragraph 00108; 00109, (2013/12/03)
The invention relates to the compounds of formula (I) or its pharmaceutical acceptable salts, as well as polymorphs, solvates, enantiomers, stereoisomers and hydrates thereof. The pharmaceutical compositions comprising an effective amount of compounds of formula (I), and methods for the treatment of respiratory disorders may be formulated for oral, buccal, rectal, topical, transdermal, transmucosal, intravenous, parenteral administration, syrup, or injection. Such compositions may be used to treatment of cough caused by minor throat and bronchial irritation (such as commonly accompanies the flu and common cold), as well as those resulting from inhaled particle irritants, upper respiratory infections, (pseudobulbar affect) in patients with amyotrophic lateral sclerosis and multiple sclerosis, neuropathic pain and pain associated with fibromyalgia.