Synthesis and Crystal Structure of Azacalix[4]pyridine[4]pyrimidine
Yang Zijun, Yin Chong, Zhang Linping, Zhong Yi, Xu Hong, Mao Zhiping
Chin. J. Org. Chem. . 2013, (12): 2607 -2611 .  DOI: 10.6023/cjoc201307042