The Structure of Viscosin, A Peptide Antibiotic. II. Syntheses of D-and L-3-Hydroxyacylhexapeptides including the Proposed Structure of Viscosin and Its Optical Isomers
作者:MINORU HIRAMOTO、KOZO OKADA、SOTOO NAGAI
DOI:10.1248/cpb.19.1315
日期:——
Homologs of D- and L-3-hydroxyacylhexapeptide including compound (I-1c) and its optical isomers (I-1'c, I-2c, I-2'c) were synthesized by condensing the tripeptide subunit with the dipeptide subunit followed by azide coupling of the resulting pentapeptide with D-or L-3-hydroxyacylleucine, and their antibacterial properties were examined. None of the synthetic acylhexapeptides was identical with viscosin in both physical and chemical properties and antituberculous activity.
通过将三肽亚基与二肽亚基缩合,然后将得到的五肽与 D-或 L-3-羟乙基亮氨酸叠氮偶联,合成了 D-和 L-3-羟乙基六肽的同系物,包括化合物(I-1c)及其光学异构体(I-1'c、I-2c、I-2'c),并考察了它们的抗菌特性。合成的酰基六肽在理化性质和抗结核活性方面都与粘多糖没有相同之处。