Lavendamycin analogues and methods of synthesizing and using lavendamycin analogues
申请人:Behforouz Mohammad
公开号:US20060079497A1
公开(公告)日:2006-04-13
Lavendamycin analogues, methods for their synthesis, and methods for their use in the treatment of diseases such as cancer and HIV infection are described.
Lavendamycin类似物,其合成方法,以及在治疗癌症和HIV感染等疾病中使用的方法被描述。
Synthesis and Antifungal Activity against Fusarium oxysporum of Some Brassinin Analogs Derived from l-tryptophan: A DFT/B3LYP Study on the Reaction Mechanism
described. Starting from l-tryptophan 2, N,N'-dialkylthiourea 4, 4-[(1H-indol-3-yl)methylene]-2-sulfanylidene-1,3-thiazolidin-5-one 5 and alkyl (2S)-3-(1H-indol-3-yl)-2-[(alkylsulfanyl)carbonothioyl]amino}propanoate 6 type compounds were obtained as main products in different ratios depending on the reaction conditions via a tandem dithiocarbamate formation and Michael addition reaction. In order to understand
One aspect of the invention relates to AI-helper compositions comprising an AI compound (e.g., melatonin, alpha-lipoic acid, vitamin E, vitamin D, glutathione, resveratrol, astaxanthin, beta carotene, vitamin A, vitamin C, vitamin B12, vitamin B6, folic acid, and taurine) and one or more helper esters. The AI-helper compositions disclosed herein can be used for effective transdermal delivery of the AI compound to a subject. Another aspect of the invention relates to applications and preparations of the AI-helper compositions.
Determination of the Rates of Formation and Hydrolysis of the Schiff Bases Formed by Pyridoxal 5′-Phosphate with L-Tryptophan and Its Methyl and<i>n</i>-Butyl Esters
作者:Gerardo. R. Echevarría Gorostidi、José G. Santos、Andrea Basagoitia、Francisco García Blanco
DOI:10.1246/bcsj.75.2471
日期:2002.11
The apparent rate constants of the formation (k1) and hydrolysis (k2) of the Schiff bases formed by pyridoxal 5′-phosphate with L-tryptophan and their methyl and n-butyl esters at a variable pH, 25 °C, and an ionic strength of 0.1 M were determined, along with the equilibrium constant (KpH). The individual rate constants of formation and hydrolysis of the Schiff bases of systems corresponding to different
由 5'-磷酸吡哆醛与 L-色氨酸及其甲基和正丁基酯形成的席夫碱形成 (k1) 和水解 (k2) 的表观速率常数,在可变 pH、25 °C 和离子测定了 0.1 M 的强度以及平衡常数 (KpH)。还确定了与介质中存在的不同化学物质相对应的系统的席夫碱形成和水解的单独速率常数,作为其酸度的函数,席夫碱的 pK 值也是如此。证明了 α-羧基对席夫碱的形成和水解常数及其 pK 值的影响。
Vinblastin-23-oyl amino acid derivatives: chemistry, physicochemical data, toxicity, and antitumor activities against P388 and L1210 leukemias
作者:Kandukuri S. P. Bhushana Rao、Marie Paule M. Collard、Jean Paul C. Dejonghe、Ghanem Atassi、Jean A. Hannart、Andre Trouet
DOI:10.1021/jm00146a017
日期:1985.8
esters to the vinblastin-23-oyl moiety through an amide linkage. Studies were extended to explore the influence of the nature of the amino acid, the ester alkyl chain lengths, the stereoisomerism of the amino acid, or the reacetylation of the hydroxyl group (position O-4) of the vindoline moiety. The present study deals with the synthesis of 21 vinblastin-23-oyl amino acid derivatives, some of their physicochemical