Three novel quinonyl muramyldipeptides, 2-2-acetamido-2-deoxy-6-O-[10-(2, 3-dimethoxy-5-methyl-1, 4-benzoquinon-6-yl) decanoyl]-D-glucopyranos-3-O-yl}-D-propionyl-L-valyl-D-isoglutamine methyl ester (1a) and its Ser and Thr analogues (1b and 1c), were synthesized and their antitumor effects on the suppression of tumor growth in syngeneic mice were assayed. Among these compounds, 1a showed the most potent antitumor activity.
研究人员合成了三种新型醌基喃喃二肽--2-2-乙酰氨基-2-脱氧-6-O-[10-(2, 3-二甲氧基-5-甲基-1, 4-苯醌-6-基)癸酰基]-D-吡喃葡萄糖-3-O-基}-D-丙酰基-L-缬氨酰基-D-异谷氨酰胺甲酯(1a)及其 Ser 和 Thr 类似物(1b 和 1c)、合成了这些化合物,并检测了它们对抑制合成小鼠肿瘤生长的抗肿瘤作用。在这些化合物中,1a 的抗肿瘤活性最强。
CALVO-MATEO, ANA;DE, LAS HERAS FEDERICO G., LIEBIGS ANN. CHEM.,(1987) N 12, 1017-1020
作者:CALVO-MATEO, ANA、DE, LAS HERAS FEDERICO G.
DOI:——
日期:——
Chemical synthesis and adjuvant activity of N-acetylmuramyl-L-alanyl-D-isoglutamine (MDP) analogs.
Twenty-two kinds of N-acetylmuramyl-L-alanyl-D-isoglutamine (MDP) analogs were synthesized and their adjuvant activity on the induction of delayed-type hypersensitivity to ABA-N-acetyl-L-tyrosine was examined. The L-alanine residue of MDP could be replaced with certain other amino acid residues without loss of activity. The structureactivity relationship of these compounds is discussed. With respect to replacement of the L-alanine residue of MDP in connection with adjuvant activity, it was shown that (1) amino acids having a suitable side chain were effective, (2) basic amino acids were unfavorable, (3) aromatic amino acids were unfavorable, and (4) acidic amino acids were effective. The D-isoglutamine residue of MDP was considered to be essential for the adjuvant activity. The adjuvant activity was decreased by esterification with methanol of the D-glutamic acid residue of MDP and related N-acetylmuramyldipeptides, but the adjuvant activity of D-glutamic acid diamide analogs was similar to that of MDP and its analogs.
N-Acetylmuramyl-L-alanyl-D-isoglutamine (MDP) and thirteen new analogs were synthesized by the conventional organic chemical procedure using dicyclohexylcarbodiimide-N-hydroxy-5-norbornene-2,3-dicarboximide as a coupling agent. Their ability to induce delayed-type hypersensitivity to N-acetyl-3-(4-arsonophenylazo)-L-tyrosine in guinea pigs was assayed. The results indicate that the presence of an α-amino