Organic electroluminescent compound, organic electroluminescent material and organic electroluminescent device comprising the same

An organic electroluminescent compound represented by the following formula 1:

• wherein
• X1 and X2, each independently, represent N or CH, with the proviso, at least one of X1 and X2 represents N,
• La represents a substituted or unsubstituted divalent (C10-C30) aromatic ring, which is one condensed ring,
• A ring and C ring, each independently, represent a substituted or unsubstituted benzene ring, or a substituted or unsubstituted naphthalene ring, with the proviso, at least one of A ring and C ring represents a substituted or unsubstituted naphthalene ring,
• B ring represents a substituted or unsubstituted benzene ring,
• Ar1, Ar2 and Ar3, each independently, represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, and
• the heteroaryl contains at least one heteroatom selected from B, N, O, S, Si, and P.