Improved synthesis and antitumor activity of 2-bromo-2'-deoxyadenosine
作者:Minchi Huang、Thomas L. Avery、Raymond L. Blakeley、John A. Secrist、John A. Montgomery
DOI:10.1021/jm00372a017
日期:1984.6
A more convenient synthetic route to 2-bromo-2'-deoxyadenosine (5) is reported, and results indicating significant antitumor activity of 5 against three murine tumors (L1210 leukemia, B16 melanoma, and M5076 ovarian carcinoma) are presented. The antitumor activity is very schedule dependent, being much greater when the drug is given q 3 h (X8) every 3rd or 4th day than when given by single daily administration. Toxicity of 5 for the tumor-bearing host is also very schedule dependent. Thus, on the q 3 h schedule of administration, a greater cumulative dose is tolerated by the host, and the therapeutic effectiveness of 5 is enhanced accordingly.
Isolation, Synthesis, and Characterization of Impurities and Degradants from the Clofarabine Process
作者:Bruce G. Anderson、William E. Bauta、William R. Cantrell, Jr.、Tracy Engles、Dennis P. Lovett
DOI:10.1021/op800182x
日期:2008.11.21
process impurities and their subsequent isolation, synthesis, and characterization is described. Two isomeric process impurities resulting from N6-attachment of a fluoroarabinose to clofarabine were found. Clofarabine’s base degradation products, which were different from the process impurities, were also synthesized and characterized. These compounds resulted from modifications to the sugar moiety, the