Pyridylmethylthio derivatives as VEGF inhibitors: Part 2
Optimization of compounds 5 and 6 led to the discovery of VEGF inhibitor 10g which reduced CYP inhibition. It was highly active in vitro (VEGF induced HUVEC proliferation assay) and showed efficacies in three disease models in vivo (cancer, RA, and AMD).
Short path syntheses of α-diozonides by sequential ozonolyses of acetylenes and O-methyl oximes
Ozonolyses of but-2-yne 1 in the presence of added carbonyl compounds 3 afford α-oxo ozonides 4. Subsequent cycloadditions between ozonides 4 and cyclohexanone oxide 6, generated in situ by ozonolysis of O-methylcyclohexanone oxime, yield in turn α-diozonides 7 into which have been incorporated the carbon skeletons of all three substrates involved. Ozonolyses of acyloxy-substituted but-2-ynes 9 yield the corresponding bicyclic α-oxo ozonides 11 which subsequently participate in analogous cycloadditions with 6 to produce the corresponding α-diozonides 12. X-Ray crystallographic analysis of the crystalline diozonide 12a shows that it has been formed exclusively by exo-addition of 6 to 11a.
Dong, Yuxiang,Griesbaum, Karl,McCullough, Kevin J.
p. 1601 - 1604
(2007/10/03)
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