Back to results
US 4,055,716 AGranted
N.sup.4 Acyl-1-arabinofuranosylcytosine-5'-esters
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsTorao Ishida, Takashi Shirai, Minoru Akiyama
Life of this patent
Estimating the term…
Abstract
N.sup.4 -Acyl-1-.beta.-D-arabinofuranosylcytosine-5'-esters represented by the formula ##STR1## wherein R.sup.1 represents an acyl group having 3 to 28 carbon atoms and R.sup.2 represents an XCH.sub.2, XCH.sub.2 CH.sub.2 or CH.sub.3 CHX group, wherein X represents a halogen atom, a (CH.sub.3).sub.2 N or (C.sub.2 H.sub.5).sub.2 N group.
Claims5
A nucleoside derivative represented by the formula:
- ##STR4## wherein R.sup.1 represents an acyl group having 3 to 28 carbon atoms and R.sup.2 represents an XCH.sub.2 -, XCH.sub.2 CH.sub.2 -- or CH.sub.3 CHX-group, wherein X represents chloro, bromo, a (CH.sub.3).sub.2 N-group or a (C.sub.2 H.sub.5).sub.2 N-group.
A nucleoside derivative represented by the formula:
- ##STR5## wherein R.sup.1 represents an acyl group having 14 to 22 carbon atoms and R.sup.2 represents an XCH.sub.2 --, XCH.sub.2 CH.sub.2 -- or CH.sub.3 CHX-group, wherein X represents chloro, bromo, a (CH.sub.3).sub.2 N-group or a (C.sub.2 H.sub.5).sub.2 N-group.
Dependencies are inferred from the claim text.