Process for the preparation of 3-substituted 7-...

Details Process for the preparation of 3-substituted 7-... Process for the preparation of 3-substituted 7-...

C - Chemistry, Metallurgy

07

D

260/102, 260/108

C07D 501/18 (2006.01) C07D 487/04 (2006.01) C07D 505/00 (2006.01)

Patent

CA 1190543

ABSTRACT OF THE DISCLOSURE A 3-substituted 7-aminocephalosporanic acid of formula: Image where R1 is hydrogen, methyl or methoxy, Y is nitrogen, oxygen sulphur or a sulphoxide group, R2 is a group selected from among azide or from a radical having the formula R3-S- where R3 may be, among others, alkyl, aliphatic acyl, methyl and chlorine or methoxy substituted aromatic acyl, is prepared. A compound of formula Image (X being chlorine, carbamoyloxy or acetoxy) is added to a medium constituted by water, a compound which may be nitric acid or a compound of formula R3-SH and a tertiary organic base, With a reaction isoelectric pH regulator, the mixture take on a specific process pH analytical profile, the compounds of said mixture being reacted together at particular temperatures and with a specific process time. 1.

406046

Affiliated with

Also associated with

Rating

Process for the preparation of 3-substituted 7-... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of 3-substituted 7-..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 3-substituted 7-... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1184746