The Partial Reduction of Carboxylic Acids to Aldehydes<i>via</i>3-Acylthiazolidine-2-thiones with Diisobutylaluminum Hydride and with Lithium Tri-<i>t</i>-butoxyaluminum Hydride
作者:Toshio Izawa、Teruaki Mukaiyama
DOI:10.1246/bcsj.52.555
日期:1979.2
carboxylic acids and readily available thiazolidine-2-thione, were reduced to the corresponding aldehydes either with diisobutylaluminum hydride in toluene at −78–−40 °C in 70–90% yields or with lithium tri-t-butoxyaluminum hydride in tetrahydrofuran at −20-0 °C in 80–90% yields. The present method appears to be applicable to the synthesis of aldehydes from both aromatic and aliphatic derivatives having
3-酰基噻唑烷-2-硫酮,很容易从羧酸和容易获得的噻唑烷-2-硫酮制备,在-78--40°C 的甲苯中用氢化二异丁基铝以 70-90% 的收率或用在四氢呋喃中在 -20-0 °C 下以 80-90% 的产率使用氢化锂三叔丁氧基铝。本方法似乎适用于从具有氯、溴、硝基和非共轭双键的芳香族和脂肪族衍生物合成醛,除了用三叔丁氧基氢化铝锂和氰基衍生物与氢化二异丁基铝的反应。反应混合物原来的黄色消失表明还原完成。
NOVEL VINBLASTINE DERIVATIVES, THEIR PREPARATION, USE AND PHARMACEUTICAL COMPOSITIONS COMPRISING THE SAID DERIVATIVES
申请人:Hu Lihong
公开号:US20100113498A1
公开(公告)日:2010-05-06
The invention provides vinblastine derivatives represented by the following formula 1 or their physiologically acceptable salts, their preparation, use and pharmaceutical compositions comprising the said derivatives. The said vinblastine derivatives show inhibiting activities against tumor cell lines and can be used as medicaments for treating malignant tumors.
Nitrobenzoic acid amide derivative represented by the formula ##STR1## wherein A is (CH.sub.2).sub.x NH(CH.sub.2).sub.y or (CH.sub.2).sub.x NH(CH.sub.2).sub.y NH(CH.sub.2).sub.z, n is 1 or 2, x, y and z are each 2 to 5, and pharmacologically acceptable acid salt thereof is an excellent radio-sensitizer.
Nitrobenzoic acid amide derivatives represented by the formula
wherein A is (CH32)x NH(CH2)y or (CH2)x NH(CH2)y NH(CH2)z, n is 1 or 2, x, y and z are each 2 to 5, and pharmacologically acceptable acid salts thereof, which are useful as radiosensitizers.
由式表示的硝基苯甲酸酰胺衍生物
其中 A 为 (CH32)x NH(CH2)y 或 (CH2)x NH(CH2)y NH(CH2)z, n 为 1 或 2, x、y 和 z 各为 2 至 5,以及其药理上可接受的酸盐,可用作放射增敏剂。
Runge,F. et al., Journal fur praktische Chemie (Leipzig 1954), 1960, vol. 11, p. 284 - 308