Patent ID: 8383609

Claim:
A compound having the following general formula: wherein: Y represents an oxygen or a sulfur atom, Z represents O or S, R 1 represents a hydrogen atom, an optionally substituted alkyl group or an aryl group, X represents an oxygen, a sulfur,a NH or NR 7 group, wherein R 7 is an optionally substituted alkyl group or an aryl group, and R 2 represents an aryl group, an optionally substituted alkyl group, a hydrogen atom, a trichloroacetimidate group (—C(═NH)CCl 3 ), an acyl, formyl, sulfonyl, sulfinyl, tert-butyldiphenylsilyl, allyl group, a saccharyl, ester, amide, thioamide, sulfonamide group, or X—R 2 represents a P(O)R 2 ′R 6 ′ group, wherein R 2 ′ and R 6 ′ represent independently from each other an aryl group, an optionally substituted alkyl group, OH, an alkoxy or an aryloxy group, R 3 and R 4 represent, independently from each other an aryl group, an optionally substituted alkyl group, a hydrogen atom, a trichloroacetimidate group, an acyl, formyl, sulfonyl, sulfinyl, tert-butyldiphenylsilyl group, an allyl, ester, amide, thioamide, sulfonamide group, or R 3 and R 4 taken together form a divalent radical of formula —R 3 —R 4 —, wherein —R 3 —R 4 —represents an isopropylidene, benzylidene, diphenyl methylidene, cyclohexyl methylidene group, and their substituted analogues, or a linear alkylene group, R 5 represents a hydrogen atom or a hydrocarbon group substituted with one or more heteroatoms selected from oxygen, sulfur or nitrogen atoms, provided that the compound of formula (1) is not: