图形化的抽象图。没有可用的字幕。&NA; 活性药物成分(API)转化为离子液体(ILs)后,其技术实用性将大大提高。与固体或结晶药物相比,API‐IL具有更好的溶解性,热稳定性和局部给药功效。但是,API-ILs的毒理学问题是其在药物输送中的主要挑战。为了解决这个问题,合成了11种氨基酸酯(AAE)并作为水溶性低的药物水杨酸(Sal)形成Sal-IL的生物相容性抗衡阳离子进行了研究。使用1 H和13 C NMR,FTIR,元素分析和热重分析对AAE进行表征。使用哺乳动物细胞系(L929和HeLa)研究了AAE阳离子,Sal-ILs和游离Sal的细胞毒性。随着阳离子侧基中包含长烷基链,硫和芳香环,AAE阳离子的毒性大大提高。选择丙氨酸,天冬氨酸和脯氨酸乙酯作为低细胞毒性AAE。与Sal结合到阳离子中的AAE相比,Sal‐ILs的细胞毒性急剧增加,与游离Sal相当。有趣的是,Sal-IL的水混
Stereochemistry and Conformation of Skyllamycin, a Non-Ribosomally Synthesized Peptide from<i>Streptomyces</i>sp. Acta 2897
作者:Vivien Schubert、Florent Di Meo、Pierre-Loïc Saaidi、Stefan Bartoschek、Hans-Peter Fiedler、Patrick Trouillas、Roderich D. Süssmuth
DOI:10.1002/chem.201304562
日期:2014.4.22
Skyllamycin is a non‐ribosomally synthesized cyclic depsipeptide from Streptomyces sp. Acta2897 that inhibits PDGF‐signaling. The peptide scaffold contains an N‐terminal cinnamoyl moiety, a β‐methylation of aspartic acid, three β‐hydroxylated amino acids and one rarely occurring α‐hydroxy glycine. With the exception of α‐hydroxy glycine, the stereochemistry of the amino acids was assigned by comparison
Asymmetric synthesis of aspartic and ?-methylaspartic acids via Ni(II) complexes with schiff bases of glycine and alanine and chiral carbonyl-containing reagents
作者:Yu. N. Belokon'、V. I. Tararov、V. I. Maleev、S. M. Motsishkite、S. V. Vitt、N. I. Chernoglazova、T. F. Savel'eva、M. B. Saporovskaya
DOI:10.1007/bf00961233
日期:1991.7
We propose a method for the synthesis of aspartic and alpha-methylaspartic acids by alkylation with ethyl bromoacetate of the alpha-carbon atom of the amino acid moiety in Ni(II) complexes of Schiff bases of glycine with (S)-2-[(N-benzylprolyl)amino]benzophenone and alanine with (S)-2-[(N-benzylprolyl)amino]-benzaldehyde, respectively. Attempts to synthesize alpha-methylaspartic acid by oxidative cleavage of the C = C bond to a COOH group in the complex of the Schiff base of alpha-allylalanine with (S)-2-[(N-benzylprolyl)amino]benzophenone were unsuccessful.
<b>Glutamic and Aspartic Anhydrides. Rearrangement of N-Carboxyglutamic 1,5-Anhydride to the Leuchs' Anhydride and Conversion of the Latter to Pyroglutamic Acid</b>
作者:J. Kovacs、H. Nagy. Kovacs、R. Ballina
DOI:10.1021/ja00895a033
日期:1963.6
Characterization and cytotoxicity evaluation of biocompatible amino acid esters used to convert salicylic acid into ionic liquids
However, toxicological issue of API‐ILs is the main challenge for their application in drug delivery. To address this issue, 11 amino acidesters (AAEs) were synthesized and investigated as biocompatible counter cations for the poorly water‐soluble drug salicylicacid (Sal) to form Sal‐ILs. The AAEs were characterized using 1H and 13C NMR, FTIR, elemental, and thermogravimetric analyses. The cytotoxicities
图形化的抽象图。没有可用的字幕。&NA; 活性药物成分(API)转化为离子液体(ILs)后,其技术实用性将大大提高。与固体或结晶药物相比,API‐IL具有更好的溶解性,热稳定性和局部给药功效。但是,API-ILs的毒理学问题是其在药物输送中的主要挑战。为了解决这个问题,合成了11种氨基酸酯(AAE)并作为水溶性低的药物水杨酸(Sal)形成Sal-IL的生物相容性抗衡阳离子进行了研究。使用1 H和13 C NMR,FTIR,元素分析和热重分析对AAE进行表征。使用哺乳动物细胞系(L929和HeLa)研究了AAE阳离子,Sal-ILs和游离Sal的细胞毒性。随着阳离子侧基中包含长烷基链,硫和芳香环,AAE阳离子的毒性大大提高。选择丙氨酸,天冬氨酸和脯氨酸乙酯作为低细胞毒性AAE。与Sal结合到阳离子中的AAE相比,Sal‐ILs的细胞毒性急剧增加,与游离Sal相当。有趣的是,Sal-IL的水混
Compounds having anti-inflammatory and anti-viral activity, compositions
申请人:Compagnie de Developpement Aguettant S.A.
公开号:US05705522A1
公开(公告)日:1998-01-06
A new family of compounds having anti-inflammatory, anti-viral, and brocho-dilating activity having the following linear and cyclic formulas: ##STR1## and compositions of these, which alone, and in combination with reverse transcriptase inhibitors thereby resulting in an additive or synergistic effect, are useful in inhibiting or suppressing viruses including those exhibiting retroviral replication, or in treating viruses including a retrovirus such as HIV in a human cell population and methods of using these compositions, compounds, and salts thereof.