| 摘要 |
<p>PCT No. PCT/EP95/03469 Sec. 371 Date Mar. 3, 1997 Sec. 102(e) Date Mar. 3, 1997 PCT Filed Sep. 4, 1995 PCT Pub. No. WO96/07672 PCT Pub. Date Mar. 14, 1996The invention relates to a carbamide of the general formulaR1-CO-NH-C(R2)(R3)-X-Ywhich is protected by a temporary protective group and wherein R1-CO means a carbonyl residue which can be provided as a unit for the chain of a peptide, and can have one or a plurality of amino acid residues; R2 and R3 mean resides of the carbamide which do not participate in their function, whereby R2 and R3 can be identical or different, but are different when one of the two residues means a hydrogen atom; X means an oxygen atom or a sulphur atom, and Y means a protective group for X. The invention further relates to a process for producing the protected carbamide and to utilisation of the protected carbamide. The protected carbamide according to the invention can also be linked to a carrier material.</p> |
