“…Type C has the five-ring system including one oxepane ring, to which apoaranotin 17 and its derivatives 15 belong. Type D has the symmetrical five-ring system, to which a number of compounds such as epicoccins, 23 epicorazines, 24 rostratins, 25 haematocins, 26 scabrosin esters, 27 brocazines, 28 exserohilones, 29 phomazine C 22 and SCH64874s 30 belong. Graphiumins A (1) to E (5) belong to type B, and graphiumins F (6) to H (8) belong to type C. Regarding the side chain extending from the central ring, all of the eight graphiumins (1 to 8) have long acyl chains.…”