(2E,7E)-9-oxodeca-2,4,5,7-tetraenoic acid 、 (7S,9R,10R)-9-ethyl-4,6,9,10,11-pentahydroxy-7-[(2R,4S,5S,6S)-5-hydroxy-6-methyl-4-(methylamino)oxan-2-yl]oxy-8,10-dihydro-7H-tetracene-5,12-dione 以a laminate structure of LA-1/LB-1/LA-1) was obtained的产率得到(7S,9R,10R)-9-ethyl-4,6,9,10,11-pentahydroxy-7-[(2R,4S,5S,6S)-5-hydroxy-6-methyl-4-(methylamino)oxan-2-yl]oxy-8,10-dihydro-7H-tetracene-5,12-dione;(2E,7E)-9-oxodeca-2,4,5,7-tetraenoic acid