Disclosed are novel liquid crystalline compounds having a wide temperature range of liquid crystal phase, a high dielectric anisotropy, and a high optical anisotropy; liquid crystal compositions comprising the compound; and liquid crystal display devices fabricated by using the liquid crystal composition; and the liquid crystalline compounds are cyclohexane derivatives expressed by the following general formula (1)
wherein R represents an alkyl group having 1 to 10 carbon atoms in which alkyl group, methylene group may be replaced by oxygen atom or ethylene group (-CH=CH-) provided that in no case continued methylene groups are simultaneously replaced by one of these groups; A 1 , A 2 , A 3 , and A 4 represent 1,4-cyclohexylene group, 1,3-pyrimidine-2,5-diyl group, or 1,3-dioxane-2,5-diyl group, or 1,4-phenylene group which may be replaced by fluorine atom; B 1 , B 2 , and B 3 independently represent a covalent bond, 1,2-ethylene group, 1,2-ethenylene group, 1,2-ethynylene group, carbonyloxy group, methylenoxy group, or 1,4-butylene group; m, n, and p are 0 or 1; and G represents the group expressed by the general formula (2), (3), or (4).