Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kazuhiro Nagata and Hitomi Ishikawa and Ayako Tanaka,Formal syntheses of dihydrocorynantheine and isorhynchophylline via proline catalyzed Mannich-Michael reaction,Heterocycles : an international journal for reviews and communications in heterocyclic chemistry,03855414,Tokyo : Japan Institute of Heterocyclic Chemistry,2010-08-01,81,8,1791-1798,https://cir.nii.ac.jp/crid/1520854805279666176,