Molecular structure of di-aryl-aldimines by multinuclear magnetic resonance and X-ray diffraction
摘要:
The complete H-1, C-13 and N-15 NMR analyses for a series of 25 diaryl-aldimines containing phenyl, pyridyl, pyrazolone and furanyl moieties are described herein. Detailed evaluation of substituent chemical shift and coupling constant effects showed that interaction between the lone pair of the pyrazolone carbonyl group or the nitrogen of 2-substitued pyridines with the aldimine hydrogen increases the (1)J(CH) value and shifts the resonance signal for this hydrogen to high frequency, in the H-1 NMR spectra. The X-ray crystal structure analysis of pyrazolone substituted aldimines evidenced the planarity of the aryl groups which are conjugated with the C=N double bond. In the case of the N-(2-pyridinemethylene)-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one, two rotamers were observed in the same unit cell. (C) 2003 Elsevier B.V. All rights reserved.
Photosensitive compounds for use in a method of treating a disease or condition are described. The photosensitive compounds have the formula R—Y, wherein R is a ruthenium complex and Y is at least one sulphur-containing photoreleasable group, and the compounds comprise at least one ruthenium-sulphur bond; or a pharmaceutically acceptable salt, solvate, ester or amide, such that upon influence of visible or near infra-red light (400-1400 nm) in vivo, said at least one ruthenium-sulphur bond is broken, thereby generating a pharmacologically active compound.
REACTION OF COMPOUNDS WITH A H-P BOND WITH SCHIFF-BASES
作者:Jian Rohovec、Pavel Vojtíšek、Ivan Lukeš
DOI:10.1080/10426509908037002
日期:1999.5.1
with a P-H bond to Schiff bases of both simple and macrocyclic compounds proceeds smoothly as a non catalysed thermally initialised reaction in an inert solvent. For macrocyclic systems and bulky phosphorus substituents a stereoselective formation of the trans isomer was confirmed by X ray analysis. The addition is reversible, and the reverse reaction is catalysed by Lewis acids. The trans orientation
摘要 具有 PH 键的化合物与简单和大环化合物的席夫碱的加成作为惰性溶剂中的非催化热初始化反应顺利进行。对于大环系统和庞大的磷取代基,通过 X 射线分析证实了反式异构体的立体选择性形成。加成是可逆的,逆反应由路易斯酸催化。大环上磷取代基的反式取向、分子的立体化学刚性和加成的可逆性限制了以这种方式形成的化合物作为配体的用途。
Photoactivatable cancer prodrug
申请人:Texas State University
公开号:US10781226B2
公开(公告)日:2020-09-22
Described herein is photocaging methodology using ruthenium (II) complexes with 7-deazahypoxanthine-based anticancer agents. Specifically, 7-deazahypoxanthines are converted into photoactivatable chemotherapeutic agents for the controlled release of these toxic agents selectively into tumor tissue upon irradiation with light.
本文描述的是利用钌 (II) 复合物与 7-脱氮次黄嘌呤类抗癌剂的光致癌方法。具体来说,就是将 7-脱氮次黄嘌呤转化为可光活化的化疗药物,以便在光照射下将这些有毒药物有选择性地控制释放到肿瘤组织中。
EL-SHAFEL, A. K.;HASSAN, KH. M., CURR. SCI., INDIA, 1983, 52, N 13, 633-634
作者:EL-SHAFEL, A. K.、HASSAN, KH. M.
DOI:——
日期:——
PHOTOACTIVATABLE CANCER PRODRUG
申请人:Texas State University
公开号:US20200239503A1
公开(公告)日:2020-07-30
Described herein is photocaging methodology using ruthenium (II) complexes with 7-deazahypoxanthine-based anticancer agents. Specifically, 7-deazahypoxanthines are converted into photoactivatable chemotherapeutic agents for the controlled release of these toxic agents selectively into tumor tissue upon irradiation with light.