The present invention relates to a compound of the following structural formula: Wherein R ¹ and R ² are respectively hydrogen atom or together represent a carbon-carbon represents a single bond; Each R ⁴ and R ⁵ are independently a hydrogen atom, or C ₁ -C ₄₀ alkyl or phenyl group, each thereof may optionally be substituted, R ⁷ is -CH ₄ -NHR ⁸ group (wherein R _x is optionally substituted It represents an alkyl group), or a group -COX (wherein X represents an alkoxy group, or an optionally substituted -NHR ^8, where R ⁸ is or represents the same) as defined above; R ⁶ and R ⁷ is a group together: Represents (wherein R ⁸ is as defined above); X is 1-6, and; Each R ₃ is independently an optionally substituted alkyl group or an alkenyl group, or the following structural formula substituted: (Wherein m is 0-25, n is 1-20, and each R ⁹ independently represents a hydrogen atom or a methyl or ethyl group, D is derived from a saturated or unsaturated hydrocarbon group containing 20-500 carbon atoms, and, Y represents a group of the formula: Wherein ^{R 1, R 2, R 4} , R 5 and R ⁶ are as defined above; X 'is a 0-5; R ³ 'is a structural formula II, IIIA or IIIB of the addition group as defined for R ^3, R ^7' is or represents a group R ⁷ group, or a -CHO or -COOH as defined above, R ⁶ and R ⁷ 'it represents a group of the together; Where R ⁸ represents the same) as defined above, and each R ₃ group is one carbon atoms of less than 550 total, with the proviso that up to R ³ group to three at the same time containing a total of more than 40 carbon atoms each number and, taken together are R ₃ group to a compound containing a total of more than 20 carbon atoms; Methods for their preparation; Novel intermediates; Lubricating oil compositions, fuel compositions and additive concentrates containing the formula I compound, and a dispersant additive provides the use of a formula I compound.