The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 1994
Filed:
May. 21, 1992
Kyoichi A Watanabe, Rye Brook, NY (US);
Grazyna Ciszewska, Jamaica, NY (US);
Tsann-Long Su, Baldwin Place, NY (US);
Ting-Chao Chou, New York, NY (US);
Sloan-Kettering Institute for Cancer Research, New York, NY (US);
Abstract
The present invention provides a compound having the structure: ##STR1## wherein R.sup.1 and R.sup.2 are independently the same or different and are hydrogen, an acetyl group; an acyl group having the formula --CO(CH.sub.2).sub.n COCH.sub.3, wherein n=1-3; --CO(CH.sub.2).sub.n COOM, wherein n=1-4 and M is hydrogen, Na or K; or --(CH.sub.2).sub.n COOR, wherein n=1-4 and R is hydrogen, Na, K or an alkyl group having 1 to 5 carbon atoms; a hydroxyalkyl group having the formula --(CH.sub.2).sub.n CH.sub.2 OH, wherein n=1-4; a halo alkyl group having the formula --(CH.sub.2).sub.n CH.sub.2 X, wherein n=1-4 and X is a chloro, bromo, or iodo group; a metal sulfonate (--SO.sub.3 M) wherein M is Na or K; a metal sulfinate (--SO.sub.2 M) wherein M is Na or K; a alkyl sulfonate (--SO.sub.3 R) wherein R is an alkyl group having 1 to 4 carbon atoms such as methyl, ethyl, n-propyl or i-propyl; an alkylsulfonyl group (--SO.sub.2 R) wherein R is an alkyl group having 1 to 4 carbon atoms such as methyl, ethyl, n-propyl or i-propyl; a metal alkylsulfonate having the formula --(CH.sub.2).sub.n SO.sub.3 M wherein n=2-3 and M is Na or K; a metal alkylsulfate having the formula --(CH.sub.2).sub.n OSO.sub.3 M wherein n=2-3, and M is Na or K; or a .beta.-alanyl group. The present invention also provides a process for synthesizing the above-identified compound, intermediate compounds produced thereby, a pharmaceutical composition comprising the above compounds as well as a method for inhibiting growth of tumor cells using these compounds.