Synthesis and Spectroscopic Characterization of 4-Chlorophenyl Isocyanate (= 1-chloro-4-isocyanatobenzene) Adducts with Amino Acids as Potential Dosimeters for the Biomonitoring of Isocyanate Exposure
作者:Marianne Möller、Dietrich Henschler、Gabriele Sabbioni
DOI:10.1002/hlca.19980810536
日期:——
of such blood-protein adducts, we treated 4-chlorophenyl isocyanate (1) with the tripeptide L-valyl-glycyl-glycine (2a) and with single amino acids yielding N-[(4-chlorophenyl)carbamoyl]valyl-glycyl-glycine (3a), N-[(4-chlorophenyl)carbamoyl]valine (3b), N-[(4-chlorophenyl)carbamoyl]aspartic acid (3c), N-(4-chlorophenyl)carbamoyl glutamic acid (3d), N-acetyl-S-[(4-chlorophenyl)carbamoyl]cysteine (3e)
血液蛋白加合物用作剂量计,用于在疾病发展的目标器官中修饰大分子。半胱氨酸,酪氨酸,丝氨酸,赖氨酸,色氨酸,组氨酸和N-末端氨基酸的官能团是异氰酸酯的潜在反应位点。尤其是血红蛋白和白蛋白的N末端氨基酸,缬氨酸和天冬氨酸分别对亲电子异生物具有反应性。为了开发定量这种血蛋白加合物的方法,我们用三肽L-戊基-甘氨酰-甘氨酸(2a)和单个氨基酸生成了N -[(4-氯苯基)氨基甲酰基,处理了4-氯苯基异氰酸酯(1)。戊基-甘氨酰-甘氨酸(3a),N- [(4-氯苯基)氨基甲酰基]缬氨酸(图3b),ñ - [(4-氯苯基)氨基甲酰基]天冬氨酸(图3c),ñ - (4-氯苯基)氨基甲酰基谷氨酸(3D),Ñ乙酰基小号- [(4-氯苯基)氨基甲酰基]半胱氨酸(3E),以及ñ乙酰基ö - [(4-氯苯基)氨基甲酰基]丝氨酸(3F),ñ α -乙酰基- ñ ε - [(4-氯苯基)氨基甲酰基]赖氨酸(3克)。对于