| 摘要 |
<p>An acylated, hindered hexahydropyrimidine of the formula (I) wherein R1, R2, R3 and R4 may be the same or different independently of each other and are alkyl having 1 to 6 carbon atoms, when unsubstituted, or alkyl or aryl substituted; R5 and R6 may be the same or different and are hydrogen, or alkyl; R7 is selected from the group consisting of: alkyl having 1 to 20 carbon atoms, substituted alkyl where the alkyl without substitution has 1 to 20 carbon atoms and where substituents may be up to five lower alkyl groups, arylalkyl, cycloalkyl having 3 to 12 carbon atoms, aryl, aryl substituted with 1 to 3 substituents selected from the group consisting of: lower alkyl, lower alkoxy, and hydroxyl;$(3,)$, wherein R9 is unsubstituted or substituted with alkyl,R10 is hydroxyl, lower alkoxy, phenoxy and the group (see formula II) and R8 is hydrogen, alkyl, substituted alkyl, arylalkyl, hydroxyl, oxyl and$(4,)$, wherein R11 is unsubstituted or substituted alkyl.</p> |
