[EN] COMPOUNDS AND METHODS FOR TREATMENT OF VIRAL INFECTIONS [FR] COMPOSÉS ET MÉTHODES POUR TRAITER DES INFECTIONS VIRALES
摘要:
Compounds and methods of using said compounds, singly or in combination with additional agents, and salts or pharmaceutical compositions of said compounds for the treatment of viral infections are disclosed.
Stable-Isotope Dimethylation Labeling Combined with LC−ESI MS for Quantification of Amine-Containing Metabolites in Biological Samples
作者:Kevin Guo、Chengjie Ji、Liang Li
DOI:10.1021/ac0704356
日期:2007.11.1
was found that deuterium labeling causes an isotopeeffect on the elution of labeled amines on RPLC but has no effect on HILIC LC. However, 13C-dimethylation does not show any isotopeeffect on either RPLC or HILIC LC, indicating that 13C-labeling is a preferred approach for relative quantification of amine-containing metabolites in different samples. The isotopicallylabeled 35 amine-containing analogues
and to develop mass spectrometry methods for the identification of all possible methylated amino acids for future metabolomic studies. In this study, all N‐methyl and N,N‐dimethyl amino acids were synthesized by the methylation of α‐amino acids and characterized by a GC‐MS method. The methylated amino acids were derivatized with ethyl chloroformate and analyzed by GC‐MS under EI and methane/CI conditions
甲基化是生物系统中必不可少的代谢过程,对于活生物体中的几种生物反应而言都非常重要。已知甲基化化合物参与大多数身体功能,其中一些充当生物标记。从理论上讲,所有α-氨基酸都可以被甲基化,并且在大多数动植物样品中都可能遇到。但是分析数据,尤其是质谱数据,仅可用于少数甲基化氨基酸。因此,至关重要的是产生质谱数据并开发质谱方法以鉴定所有可能的甲基化氨基酸,以用于未来的代谢组学研究。在这项研究中,所有N-甲基和N,N二甲基氨基酸是通过α-氨基酸的甲基化合成的,并通过GC-MS方法进行了表征。甲基化的氨基酸用氯甲酸乙酯衍生化,并在EI和甲烷/ CI条件下通过GC-MS分析。N-甲基(1-18)和N,N-二甲基氨基酸(19-35)的氯甲酸乙酯衍生物的EI质谱显示出丰富的[M-COOC 2 H 5 ] +离子。由于[M-COOC 2 H]中的C 2 H 4,CO 2((CO 2 + C 2 H 4))的损失而产生的碎片离子5
Halogenated Fatty Acid Amides and Cyclic Depsipeptides from an Eastern Caribbean Collection of the Cyanobacterium <i>Lyngbya majuscula</i>
作者:Jorge I. Jiménez、Tifanie Vansach、Wesley Y. Yoshida、Bryan Sakamoto、Peter Pörzgen、F. David Horgen
DOI:10.1021/np900173d
日期:2009.9.25
extract of an eastern Caribbean collection of Lyngbyamajuscula yielded two new halogenated fatty acid amides, grenadamides B (1) and C (2), and two new depsipeptides, itralamides A (3) and B (4), along with the known compounds hectochlorin and deacetylhectochlorin. The recently reported depsipeptide carriebowmide (5) was also present in the extract and isolated as its sulfone artifact (6). Compounds 1−4
东加勒比收集的Lyngbya majuscula的亲脂性提取物产生了两种新的卤代脂肪酸酰胺,手榴弹胺 B ( 1 ) 和 C ( 2 ),以及两种新的缩肽,依曲酰胺 A ( 3 ) 和 B ( 4 ),以及已知的化合物八氯环素和脱乙酰八氯环素。最近报道的缩酚肽 carriebowmide ( 5 ) 也存在于提取物中,并作为其砜类人工制品被分离 ( 6 )。化合物1 - 4通过光谱方法鉴定。3 , 4 , 6氨基酸残基的构型通过酸水解产物的非对映异构衍生物的 LC-MS 分析(高级 Marfey 方法)确定。基于6的构型分析,与真正的carriebowmide ( 5 )直接比较,提出了对5的微小结构修正。化合物1和2对甜菜夜蛾(Spodoptera exigua)显示出边际活性。化合物1 - 4和6进行了评估在人胚胎肾(HEK293)细胞一般小区毒性。只有依曲酰胺 B ( 4 ) 显示出显着的细胞毒性,IC
Etude par la modélisation moléculaire de la régiosélectivité de l'Ouverture des acides glycidiques par les amines aliphatiques
作者:F. Grosjean、M. Huché、M. Larchevêque、J.J. Legendre、Y. Petit
DOI:10.1016/s0040-4020(01)85509-5
日期:——
A model for glycidic acids opening reaction by ammonia and amines has been suggested from semi-empiric orbital calculations. It provides a way for evaluating the different interactions between the incoming nucleophile and the oxirane substituents. Steric and coulombic interactions of the carboxylate in staggered conformation (cis substitution) has a major influence to rationalize experimental regioselectivity
The present invention relates to tripeptide compounds according to the general formula (1) and their use as a medicament, in particular as anti-inflammatory agents.