摘要:
&bgr;-Alanine esters of camptothecin compounds which are effective anti-tumor compounds are disclosed. These compounds inhibit the enzyme topoisomerase I and may alkylate DNA of the associated topoisomerase I-DNA cleavable complex.
摘要:
Disclosed are compounds of the formula: or the pharmaceutically acceptable non-toxic salts thereof where R1-R4 and A are defined herein, which compounds are highly selective agonists, antagonists or inverse agonists for GABAa brain receptors or prodrugs of agonists, antagonists or inverse agonists for GABAa brain receptors and are, therefore, useful in the diagnosis and treatment of anxiety, Down Syndrome, depression, sleep, cognitive and seizure disorders, overdose with benzodiazepine drugs and for enhancement of alertness.
摘要:
Aromatic camptothecin ester compounds having the formula: are described as well as formulations containing the compounds. Methods of treating cancer and/or tumors are also disclosed.
摘要:
A process for preparing S type 2-substituted hydroxy-2-indolidinyl-butyric ester compound [II]: wherein R0 is residue of nitrogen-containing fused heterocyclic carboxylic acid having absolute configuration of “R”(in which the nitrogen atom is protected), R1 and R2 are lower alkyl group, and E is ester residue, which is useful as an intermediate for preparing camptothecin derivatives having antitumor activities, which comprises 2-ethylating 2-substituted hydroxy-2-indolidinylacetic ester compound [I]: wherein the symbols are as defined above.
摘要翻译:一种制备S型2-取代羟基-2-吲哚哩啶基 - 丁酸酯化合物[II]的方法:其中R 0是具有绝对构型“R”(其中保护氮原子)的含氮稠合杂环羧酸的残基, R 1和R 2为低级烷基,E为酯残基,其可用作制备具有抗肿瘤活性的喜树碱衍生物的中间体,其包括2-乙基化2-取代的羟基-2-吲哚哩啶基乙酸酯化合物[I]:其中 符号如上所述。