prov:value
| - Another group of preferred compounds are compounds of Formula I where R1 is substituted aralkynyl, e.g. R1 is 4-substituted phenylalkynyl such as 4-acetylphenylethynyl, 4-methoxyphenylethynyl, 4-N,N-dimethylaminophenylethynyl, 4-cyanophenylethynyl, 4-carboxyphenylethynyl ethyl ester, 4-N,N-dialkylamidophenylethynyl, or where R1 is oxoalkynyl, hydroxyalkynyl, acetoxyalkynyl, cyanoalkynyl, or alkoxy
|