Process of purification of a nona- or deca peptide from...

C - Chemistry – Metallurgy – 07 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07K 1/30 (2006.01) C07K 7/06 (2006.01)

Patent

CA 2471717

A nona- or decapeptide is purified from residual organic solvent by dissolving in a solvent comprising water and at least one C1-C3 alcohol followed by precipitation into a vigorously stirred solvent consisting of an alkyl ester of a carboxylic acid, the ester comprising from 3 to 6 carbon atoms, and one or several non-polar compounds selected from hexane, heptane, octane, cyclohexane, methylcyclohexane, and, optionally, of up to 5 % of acetic or propionic acid, isolating the precipitated nona- or decapeptide, followed by washing with a mixture of C3-C5 esters and drying, wiht the provisio that the water content of the solvent comprising water and the at least one alcohol is below 8 % (v/v), and that the volume ratio of the dissolution solvent mixture and the precipitation solvent mixture is 1:10 or higher. Also described is the monoacetate of Ac-D-2Nal-D-4ClPhe-D-3Pal-Ser-MeTyr-D-Asn-Leu-Lys(iPr)-Pro-D- Ala-NH2.

Selon l'invention, un nonapeptide ou un décapeptide est purifié à partir d'un solvant organique résiduel par dissolution dans un solvant, constitué d'eau et d'au moins un alcool en C¿1?-C¿3?, suivie d'une précipitation dans un solvant, vigoureusement agité, constitué d'un mélange d'ester d'alkyle d'acide carboxylique, l'ester comprenant de 3 à 6 atomes de carbone, et d'un ou de plusieurs composés non polaires sélectionnés parmi le groupe comprenant hexane, heptane, octane, cyclohexane, méthycyclohexane, et, éventuellement, jusqu'à 5 % d'acide acétique ou propionique, suivie d'une isolation du nonapeptide ou du décapeptide, puis d'un lavage au moyen d'un mélange d'esters en C¿3?-C¿5? et d'un séchage, sous réserve que la teneur en eau du solvant contenant l'eau et l'alcool soit inférieure à 8 % (en volume par volume), et que le rapport volumique du mélange entre le solvant de dissolution et le solvant de précipitation soit de 1:10 ou plus élevé. L'invention concerne aussi le monoacétate de Ac-D-2Nal-D-4ClPhe-D-3PaI-Ser-MeTyr-D-Asn-Leu-Lys(iPr)-Pro-D-Ala-NH¿2?.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process of purification of a nona- or deca peptide from... 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 of purification of a nona- or deca peptide from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of purification of a nona- or deca peptide from... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1836704

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.