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:
Mar. 17, 1987
Filed:
May. 01, 1985
Takeda Chemical Industries, Ltd., Osaka, JP;
Abstract
7-Deazapurine derivatives of the formula: ##STR1## wherein R.sup.1 is phenyl which has, at the ortho position and/or para position as substituents, at least one group represented by the formula --O--R.sup.3, --S--R.sup.4 or ##STR2## (wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different and each is hydrogen or an alkyl or phenyl group which may be substituted, whereby R.sup.5 and R.sup.6, together with the adjacent nitrogen atom, may form a cyclic amino group which may be substituted, and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each may represent a protective group), and may have a group or groups with a molecular weight of up to about 200 as a substituent at any position other than those having the said substituents introduced; R.sup.2 is an amino group which may be protected, or its salt, have a potent antitumor activity, and hence the compounds are useful as an antitumor agent.