CRYSTALLINE FORM OF A SUBSTITUTED THIAZOLYLACETIC ACID TRIETHYLAMINE SALT

摘要

The invention relates to a crystalline form of a triethylamine salt of (2Z)-2-(2-amino-5-chlorothiazol-4-yl)-2-(3-N-tert-butoxycarbonylaminopropoxyimino)acetic acid. The invention also relates to processes and intermediates for preparing the crystalline form. The crystalline form is useful as an intermediate for preparing cross-linked glycopeptide-cephalosporin antibiotics.

主权项

1. A crystalline form of (2Z)-2-(2-amino-5-chlorothiazol-4-yl)-2-(3-N-tert-butoxycarbonylaminopropoxyimino)acetic acid triethylamine salt; wherein the crystalline form is characterized by at least one of the following properties:
(a) a powder x-ray diffraction pattern comprising diffraction peaks at 2θ values of 5.00±0.20, 12.92±0.20, 15.00±0.20, 16.92±0.20, 22.36±0.20, 23.36±0.20 and 24.54±0.20; (b) a melting onset temperature of about 139° C.; or (c) crystalline parameters at 293 K comprising (i) a monoclinic crystal system, (ii) a P21/c space group, and (iii) unit cell dimensions substantially equal to: a=8.587(4) {acute over (Å)}, b=35.594(12) {acute over (Å)}, c=8.308(3) {acute over (Å)} and β=100.63(4)°.