New compounds of the formula ##STR1## (wherein R.sub.1 represents a lower alkyl group: and ##STR2## represents an alkylidene radical in which at least one of R.sub.2 and R.sub.3 is a lower alkyl which may optionally be substituted by phenyl, phenyl or a 5- or 6-membered aromatic ring including S, N or O, and the remainder, if any, is hydrogen; or a cycloalkylidene radical of up to six carbon atoms, to which a benzene ring may optionally be fused). These compounds are produced by reacting the corresponding 6-acyloxy compounds with a compound of the formula ##STR3## The new compounds have antiviral activity and are useful to prolong the life spans of tumor-bearing animals.
Selective Synthesis of <i>E</i> and <i>Z</i> Isomers of Oximes
作者:Hashem Sharghi、Mona Hosseini Sarvari
DOI:10.1055/s-2001-9719
日期:——
The highly stereoselective conversion of aldehydes and ketones to their corresponding oximes with hydroxylamin hydrochloride are catalyzed by CuSO4 and K2CO3. This method occurs under mild reaction conditions with high yields.