Abstract:
Insulin derivatives which are water soluble, readily isolated, immunologically acceptable and which retain hypoglycaemic activity are those in which at least one of the A1, B1 and B29 aminoacid amino groups is converted into a blocked amino group having a substituent capable of forming an anion, e.g., by substitution with dicarboxylic acid radicals.
Abstract:
Insulin derivatives which have an improved profile of hypoglycaemic activity, or which are intermediates for the production of such derivatives, are those in which at least one of the A1(glycine, B1(phenylalanine) and B29 (lysine) amino acid units is blocked by a carbamyl group or a substituted carbamyl group R1R2NCO- wherein R1 and R2 can be hydrogen, alkyl, aryl or other radicals. Masking of the initial activity is achieved by blocking tryosine hydroxyl groups with substituents which are releasable in vivo. N, N'', N''''- tricarbamyl and -triethylcarbamyl insulin, and Osubstituted derivatives thereof are typical compounds of the invention.
Abstract translation:具有改善的降血糖活性概况或作为制备这种衍生物的中间体的胰岛素衍生物是其中A1(甘氨酸,B1(苯丙氨酸)和B29(赖氨酸)氨基酸单元)中的至少一种被 氨基甲酰基或取代的氨基甲酰基R 1 R 2 NCO-,其中R 1和R 2可以是氢,烷基,芳基或其它基团。
Abstract:
Insulin derivatives which are water soluble, readily isolated, immunologically acceptable and which retain hypolgycaemic activity are those in which at least one of the A1, B1 and B29 aminoacid amino groups is converted into a blocked amino group having a substituent capable of forming an anion e.g. by substitution with dicarboxylic acid radicals. An additional refinement comprises blocking tyrosine hydroxyl groups with substituents which are releasable in vivo thereby achieving latent activity which is revealed progressively in order to provide prolonged action.