| abstract |
Compounds of formula(I) where B is oxygen or sulphur, D is nitrogen, R 6 and R 7 forms a ring, m is 2, R is a substituted latam ring of formula (i) ##STR1## where p is 1, P is a substituted or unsubstituted bicyclic ring containing one or two heteroatoms or P is an unsbustituted or substituted 5- to 7-memebered saturated ring containing one or two heteroatoms; X, Y, Z, E, G, R 3 , R 4 , R 5 , R 8 , R 9 , and R 10 are as defined in the specification. |