Synthesis, DNA binding and biological evaluation of synthetic precursors and novel analogs of netropsin
摘要:
A series of oligopeptides have been synthesized that are structurally related to the natural agent netropsin. The binding constants to double-stranded polynucleotides as well as the cytostatic activity against both murine human tumor cell lines and the in vitro activity against a range of DNA and RNA viruses have been determined for these novel compounds and some of their synthetic precursors. 1-Methyl-5-nitropyrrole-2-carboxylic acid methyl ester (4), N-[[1-methyl-4-(1-methyl-4-nitropyrrole-2-carboxamido)pyrrol-2- yl]carbonyl]-L-alanine tert-butyl ester (28), and N-[[1-methyl-4-(1-methyl-4-nitropyrrole-2-carboxamido)pyrrol-2- yl]carbonyl]-L-alanyl-L-alanine tert-butyl ester (29) showed modest inhibitory effect on tumor cell proliferation (CD50 = 26-85 micrograms/mL). Of all the compounds that were evaluated, 28 proved the most potent antiviral agent. It was inhibitory to parainfluenza-3 virus and Coxsackie virus B4 in Vero cells at a concentration of 20 micrograms/mL.
6-[.alpha.-(.omega.-GUANIDINOALKANOYLAMIDO)ACYLAMIDO]PENICILLANIC ACIDS, THE NON-TOXIC SALTS AND ESTERS THEREOF ARE USEFUL AS ANTIBACTERIAL AGENTS, THERAPEUTIC AGENTS IN ANIMALS, INCLUDING MAN, OF PARTICULAR VALUE AGAINST GRAM-NEGATIVE BACTERIA, AND AS ANIMAL FEED NUTRITIONAL SUPPLEMENTS.
Structure–activity relationships of pyrrole amidine antiviral antibiotics III: Preparation of distamycin and congocidine derivatives based on 2,5-disubstituted pyrroles
of distamycin A and tripyrrole congocidine containing 2,5-disubstitutedpyrroles were synthesized along with distamycin and congocidine homologs containing a single pyrrole ring. Selected compounds were evaluated for their cytotoxicity and antiviral activity. All of the tripyrrole derivatives tested in this series were nontoxic but were less active than distamycin A. The monopyrrole derivative, N-
Syntheses and Characterization of two cyclo‐pentazolate salts
作者:Xieyang Wang、Zhen Dong、Rui Yang、Shengren Zhou、Zhiwen Ye
DOI:10.1002/zaac.202000309
日期:2021.3.26
Twoenergeticsalts of cyclo‐N5−, O‐methylisoure pentazolate (1) and guanidinoacetic acid pentazolate (2), were synthesized by metathesis reaction. All the energetic cyclo‐N5− salts were characterized by single‐crystal XRD, IR spectroscopy, 1H and 13C multinuclear NMR spectroscopy, thermalanalysis (DSC) and elemental analysis. They exhibit good thermal stability with decomposition temperatures of
的环-N二高能盐5 -,O- methylisoure pentazolate(1)和胍基乙酸pentazolate(2)中,通过复分解反应合成。所有的高能环-N 5 -通过单晶X射线衍射,IR光谱法,盐进行表征1 H和13 C ^多核NMR光谱学,热分析(DSC)和元素分析。它们表现出良好的热稳定性,分解温度超过100°C,并且与报道的非金属盐极为吻合。盐1还表现出很强的π-π相互作用。使用Gaussian 09和EXPLO5 v6.01程序计算这些盐的形成和爆炸性能的标准焓。化合物1和2的爆炸速度均为约7400m s -1,并且这两种盐表现出较低的机械敏感性(IS> 23 J,FS> 220 N)。因此,在这项工作中,新的戊唑盐的合成丰富了环戊唑盐体系,这有利于探索具有更高耐热性和更高爆震速度的戊唑盐。
Structure-activity relationships of pyrrole amidine antiviral antibiotics. 2. Preparation of mono- and tripyrrole derivatives of congocidine
virus (HSV) replication in cultured cells, and effects on the synthesis of HS DNA in isolated nuclei in vitro, as well as on DNA synthesis by purified HSV DNA polymerase. All synthesized tripyrrole derivatives of congocidine were less cytotoxic and more active than the parent drug in all the three ant iviral tests.
Structure elucidation of a condensation product of 4-aminopyrrole derivatives and dicyclohexylcarbodiimide
作者:Meir Bialer、Boris Yagen、Raphael Mechoulam
DOI:10.1002/jhet.5570170834
日期:1980.12
The chemical structure of the two condensationproducts of dicyclohexylcarbodiimide (DCC) with the precursors of the mono-pyrrole homologues of distamycin and with the mono and tri-pyrrole homologues of congocidine were established. The two products isolated were proven to be condensationproducts between 4-aminopyrrole derivatives and dicyclohexylcarbodiimide (DCC).