Design and Synthesis of Poly ADP-ribose Polymerase-1 Inhibitors. 2. Biological Evaluation of Aza-5[H]-phenanthridin-6-ones as Potent, Aqueous-Soluble Compounds for the Treatment of Ischemic Injuries
摘要:
A series of aza-5[H]-phenanthridin-6-ones were synthesized and evaluated as inhibitors of poly ADP-ribose polymerase-1 (PARP-1). Inhibitory potency of the unsubstituted aza-5[H]-phenanthridin-6-ones (i.e., benzonaphyhyridones) was dependent on the position of the nitrogen atom within the core structure. The A ring nitrogen analogues (7-, 8-, and 10-aza-5[H]-phenanthridin-6-ones) were an order of magnitude less potent than C ring nitrogen analogues (1-, 2-, 3-, and 4-aza-5[H]-phenanthridin-6-ones). Preliminary stroke results from 1- and 2-aza-5[H]-phenanthridin-6-one prompted structure-activity relationships to be established for several 2- and 3-substituted 1-aza-5[H]-phenanthridin-6-ones. The 2-substituted 1-aza-5[H]-phenanthridin-6-ones were designed to improve the solubility and pharmacokinetic profiles for this series of PARP-1 inhibitors. Most importantly, three compounds from this series demonstrated statistically significant protective effects in rat models of stroke and heart ischemia.
USE OF SUBSTITUTED ISOQUINOLINONES, ISOQUINOLINDIONES, ISOQUINOLINTRIONES AND DIHYDROISOQUINOLINONES OR IN EACH CASE SALTS THEREOF AS ACTIVE AGENTS AGAINST ABIOTIC STRESS IN PLANTS
Use of substituted isoquinolinones, isoquinolindiones, isoquinolintriones and dihydroisoquinolinones or in each case salts thereof as active agents against abiotic stress in plants