Synthesis and antitumor activity of a new class of water soluble camptothecin derivatives
摘要:
A new family of water soluble camptothecin derivatives is described. Their synthesis, in vitro cytotoxicity, and in vivo antitumor activity is reported. Compounds 5a and 5c displayed excellent in vivo antitumor activity both ip and iv.
Eine Methode zur katalysierten Herstellung von Carbonsäure- und Sulfosäure-chloriden mit Thionylchlorid
作者:H. H. Bosshard、R. Mory、M. Schmid、Hch. Zollinger
DOI:10.1002/hlca.19590420526
日期:——
AbstractSulphonic acids and carboxylic acids which do not react with thionyl chloride under normal conditions give the corresponding acid chlorides with this reagent in excellent yields when dimethylformamide is present as a catalyst.The reaction of thionylchloride with dimethylformamide yields the corresponding amide chloride which has not been isolated before in pure state. This amide chloride reacts with acids under formation of acid chlorides. The mechanism of these reactions is discussed.
Kirchgässner, Uwe; Piana, Hermann; Schubert, Ulrich, Journal of the American Chemical Society, 1991, vol. 113, # 6, p. 2228 - 2232