574 results about "Peptide bond" patented technology

The present invention provides variants of C-type natriuretic peptide (CNP) comprising one or more deletions; additions of and / or substitutions with natural amino acids, unnatural amino acids and / or peptidomimetics (including peptide bond isosteres); amino acid extensions; and / or other chemical moieties such as, e.g., poly(ethylene glycol) and hydrophobic acids. The CNP variants are useful as therapeutic agents for the treatment of diseases responsive to CNP, including but not limited to bone-related disorders such as, e.g., skeletal dysplasias and achondroplasia, and vascular smooth muscle disorders such as, e.g., restenosis and arteriosclerosis.

The present invention relates to compounds of the formula (I) wherein X1 and X2 independently represent O, NH or S, R1 and R2 are independently selected from the group consisting of a C1-C30 hydrocarbyl group, an amino acid bonded via an amide bond or a peptide bonded via an amide bond each having up to 200 amino acids, the conjugated residue X1 or X2 in this case being NH, and hydrogen, both radicals R1 and R2 preferably not being H, wherein R3 is a residue selected from group consisting of —S—R6, wherein R6 is a C1-C30 hydrocarbyl group, at least one of R1 and R2 not being H when X1 and X2 are oxygen, —S—CH2—CH(NH2)(COOH) (cysteine-S-yl), a homologue or derivative (e.g. N-acetyl cysteine-S-yl) thereof, a peptide having up to 200 amino acids which contains at least one amino acid radical with a thiol group, preferably a cysteine radical, and is bonded via the thio sulfur, preferably via the cysteine sulfur (peptide-S-yl), coenzyme A which is bonded via a thiol group or fragments thereof, acyl carrier protein bonded via a thiol group, and dihydrolipoic acid bonded via a thiol group, and pharmaceutically acceptable salts thereof. The present invention also relates to the use of these compounds for preparing a drug and drugs containing the same.

Methods for synthesizing proinsulin polypeptides are described that include a contacting a proinsulin polypeptide including an insulin polypeptide coupled to one or more peptides by peptide bond(s) capable of being cleaved to yield the insulin polypeptide with an oligomer under conditions sufficient to couple the oligomer to the insulin polypeptide portion of the proinsulin polypeptide and provide a proinsulin polypeptide-oligomer conjugate, and cleaving the one or more peptides from the proinsulin polypeptide-oligomer conjugate to provide the insulin polypeptide-oligomer conjugate. Methods of synthesizing proinsulin polypeptide-oligomer conjugates are also described as are proinsulin polypeptide-oligomer conjugates. Methods of synthesizing C-peptide polypeptide-oligomer conjugates are also described.