[EN] THREE COMPONENT CO-CRYSTAL FORMATION BETWEEN DIASTEREOMERIC MIXTURES OF 3-ALKYL-4-((S)-1'PHENYLETHYLAMINO) BUTANOIC ACID AND OPTICALLY PURE 1, 1'-BI-2-NAPHTHOL<br/>[FR] FORMATION D'UN CO-CRISTAL À TROIS COMPOSANTS ENTRE DES MÉLANGES DIASTÉRÉOMÈRES D'ACIDE 3-ALKYL-4-((S)-1'-PHÉNYLÉTHYLAMINO)BUTANOÏQUE ET DE 1,1'-BI-2-NAPHTOL OPTIQUEMENT PUR
申请人:LUPIN LTD
公开号:WO2012007814A2
公开(公告)日:2012-01-19
A ternary co-crystal consisting of 1 :0.5:0.5 molar proportion of (S)-1,1'-bi-2-naphthol, 3(S)-propyl-4-[(S)1 '-phenyl-ethylamino]-butanoic acid and 3(R)-propyl-4-[(S)1'- phenyl-ethylamino]-butanoic acid having characteristic powder X-ray diffraction pattern with 2Θ values of 8.41, 9.38, 10.32, 12.16, 15.52, 15.51, 17.84, 17.95, 19.16, 20.37, 21.74, 22.55, 24.44, 25.65, 28.40, 29.15, 29.69, 31.31, 33.54, 34.40, 35.43 (±0.2) and having differential scanning calorimetric peak at about 189.23 ° C when analyzed at the rate of heating of 10°C per minute and process for preparing the same. A process for resolution of (S)-1,1'-bi-2-naphthol from RS-1,1'-bi-2-naphthol.