An Efficient Preparation of Macrocycles Bearing Vinamidine Moieties by the Cyclocondensation of Malonaldehyde Derivatives and 1,ω-Diaminoalkanes - Takamura, Shinji; Yoshimiya, Takanori; Kameyama, Shinobu; Nishida, Akiko; Yamamoto, Hidetoshi; Noguchi, Michihiko (Synthesis, 2000)