| 摘要 |
<p>5,6-Dihydro-5-halomethylene-2-pyranone derivatives (I) are new. 5,6-Dihydro-5-halomethylene-2-pyranone derivatives of formula (I) and their isomers, enantiomers, diastereoisomers and mixtures, are new. X = Cl, Br or I; R 1, R 2= H or 1-20C alkyl, cycloalkyl or alkylene (all optionally substituted by OH, amino, ether or halo, or R 1+ R 2= 5-8-membered ring optionally substituted by OH, amino, ether or halo. Independent claims are also included for: (1) preparation of (I); (2) 3-halo-2-hydroxymethyl-2-propen-1-al derivatives of formula X-CH=C(CHO)-C(OH)(R 1)(R 2) (IV). [Image] ACTIVITY : Cytostatic. In a test, nude mice with subcutaneous HCT 116 tumor grafts were treated by intravenous injection with E-6,6-dimethyl-5-iodomethylene-5,6-dihydro-2-pyranone (80 mg/kg) on days 0, 3, 6 and 9. Median tumor volume was 53.5% of control after 21 days. MECHANISM OF ACTION : None given.</p> |
