1969 年 89 巻 2 号 p. 279-282
dl-1, 2, 3, 10, 11-Pentamethoxy-5, 6, 13, 13a-tetrahydro-8H-dibenzo [a, g]-quinolizine (IV) and dl-2, 3, 10, 11, 12-pentamethoxy-5, 6, 13, 13a-tetrahydro-8H-dibenzo [a, g] quinolizine (VII) were synthesized to examine if they were identical with O, O-dimethylcapaurimine but neither was the same and it was not possible to presume the structure of capaurimine from these compounds.