The present invention provides non-peptide compounds of formula (I) wherein: X is —(C1-C8)allcyl-, aryl or -aryl(C1-C8)alkyl- Y is —(C1-C8)alkyl- or absent W is heteroaryl, (C3-C7)carbocycle or aryl, wherein any heteroaryl, (C3-C7)carbocycle or, aryl of W is optionally substituted with one or more (e.g. 1, 2, 3, 4 or 5) Z1 groups R1 is (C1-C8)alkyl, (C2-C8)alkenyl, (C2-C8)alkynyl or aryl, wherein aryl is optionally substituted with one or more (e.g. 1, 2, 3, 4 or 5) groups selected from (C1-C8)alkyl, (C2-C8)alkenyl, (C2-C8)alkynyl, (C3-C7)carbocycle, halo(C1-C3)alkyl, —CN, NO2, halogen, —ORa, —SRa, —S(O)2NRbRc, —NRbRc, —NRaCORd, —C(O)Ra, —C(O)ORa, and —C(O)NRbRc R2 is (C1-C8)alkyl, (C2-C8)alkenyl, (C2-C8)Jalkynyl or aryl, wherein aryl is optionally substituted with one or more (e.g. 1, 2, 3, 4 or 5) groups selected from (C1-C8)alkyl, (C2-C8)alkenyl, (C2-C8)alkynyl, (C3-C7)carbocycle, halo(C1-C3)alkyl, —CN, NO2, halogen, —ORe, —SRe, —S(O)2NRfRg, —NRfRg—NReCORh, —C(O)Re, —C(O)ORe and —C(O)NRfRg I that mimic the streptococcal SspB Adherence Region (BAR) and function as inhibitors of P. gingivalis adherence to streptococci. The invention also provides methods of making and using the inhibitors.