Patent ID: 8013188

Claim:
An aminocalixarene of the following Formula 5: wherein, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R′ 1 , R′ 2 , R′ 3 , R′ 4 , R′ 5 , R′ 6 , R′ 7 , R′ 8 are independently selected from the group consisting of —CH 3 , —C 2 H 5 , —C 3 H 7 , —OCH 3 , —Cl, —C 6 H 5 , —OH, —OCH 2 CH 3 , —Br, —CF 3 , —OCH 2 C 6 H 5 , —OC 6 H 5 , —OC 6 H 4 CH 3 , —OC 6 H 4 C(CH 3 ) 3 , —OC 6 H 4 CF 3 , —OC 6 H 4 Cl, —OCOCH 3 , —NHCOCH 3 , —CONHCH 3 , —CN, —COOH, and —COOR, and in said —COOR, R represents —CH 3 or —C 2 H 5 ; wherein R 1 =R 2 =R 3 =R 4 =R 5 =R 6 =R 7 =R 8 , and R′ 1 ==R′ 2 =R′ 3 =R′ 4 =R′ 5 =R′ 6 =R′ 7 =R′ 8 , but R 1 ≠R′ 1 .