Stereochemical control in the preparation of α-amino N-methylthiazolidine masked aldehydes used for peptide aldehydes synthesis
作者:Christel Gros、Cyril Boulègue、Nathalie Galeotti、Gilles Niel、Patrick Jouin
DOI:10.1016/s0040-4020(02)00115-1
日期:2002.3
Chiral N-methyl thiazolidines masked α-amino aldehydes are used for solid phase peptide aldehyde elongation. Contrary to N-Boc-protected α-amino aldehydes, N-trityl protection secures the chiral integrity of the incoming aldehyde chiral C1′ carbon atom during condensation of the amino aldehydes with l-cysteinyl residues. The Ac-Tyr-Val-Ala-Asp-H caspase inhibitor was prepared on a solid support starting
手性N-甲基噻唑烷掩蔽的α-氨基醛用于固相肽醛的延伸。与N -Boc保护的α-氨基醛相反,N-三苯甲基保护可在氨基醛与1-半胱氨酰基残基缩合的过程中确保传入的醛手性C1'碳原子的手性完整性。从该掩盖天冬氨酸的N-三苯甲基-氨基噻唑烷开始,在固体支持物上制备Ac-Tyr-Val-Ala-Asp-H caspase抑制剂,以验证该过程。