112243-65-9Relevant articles and documents
An excellent new resolving agent for the diastereomeric resolution of rac-mandelic acid
Wang, Pei,Zhang, En,Niu, Jian-Feng,Ren, Qing-Hua,Zhao, Peng,Liu, Hong-Min
, p. 1046 - 1051 (2012/10/30)
Chiral mandelic acid (S)-1, which is an important precursor for stereoselective transformations and a versatile intermediate for pharmaceuticals, was resolved with the Pope and Peachey method. Enantiopure 1-amino-3-phenoxypropan-2-ol (S)-2, a key intermediate for pharmaceuticals, was used to resolve rac-mandelic acid rac-1 successfully for the first time. The less soluble salt (S)-1·(S)-2·H2O could be obtained in 77% yield and 98% de (E 75%) using (S)-2 and LiOH in water. The crystal structure of the less soluble salt (S)-1·(S)-2·H2O showed that the water molecule played a key role in forming the crystals.
2- ( (2, 3-DIHYDROXYPROPYL) AMINOMETHYL) CHROMANE DERIVATIVES FOR USE AS BETA-3 ADRENORECEPTOR AGONISTS IN THE TREATMENT OF UROLOGICAL AND INFLAMMATORY DISORDERS
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Page/Page column 37, (2010/02/12)
This invention relates to chroman derivatives of formula (I) and salts thereof which are useful as active ingredients of pharmaceutical preparations. The chroman derivatives of the present invention have an excellent activity as BETA 3 antagonists and are useful for the prophylaxis and treatment of diseases associated with BETA 3 activity, in particular for the treatment of urological disorder or disease, such as detrusor overactivity (overactive bladder), urinary incontinence, neurogenic detrusor overactivity (detrusor hyperflexia), idiopathic detrusor overactivity (detrusor instability), benign prostatic hyperplasia, and lower urinary tract symptoms; and inflammatory disorders, such as asthma and COPD.
Resolution of β-aminoalcohols and 1,2-diamines using fractional crystallization of diastereomeric salts of dehydroabietic acid
Guangyou, Zhang,Yuquing, Liao,Zhaohui, Wang,Nohira, Hiroyuki,Hirose, Takuji
, p. 3297 - 3300 (2007/10/03)
(S)-(+)-1-Amino-3-phenyloxy-2-propanol, (R)-(-)-2-amino-1-phenylethanol, (S)-(+)-1-amino-2-propanol, (1S,2S)-(+)-2-aminocyclohexanol and (1S,2S)-(+)-1,2-diaminocyclohexane were resolved using dehydroabietic acid. It was shown that good to high enantiomeric purity, between 81~>99% ee, was obtained and that dehydroabietic acid could be easily and efficiently recovered in a reusable form.