Author's Organization:Research Development Division, Takeda Chemical Industries, Ltd. Research Development Division, Takeda Chemical Industries, Ltd. Research Development Division, Takeda Chemical Industries, Ltd. Research Development Division, Takeda Chemical Industries, Ltd. Research Development Division, Takeda Chemical Industries, Ltd.
The structure of pillaromycin A (I, PMA), C28H28O11, is elucidated as I. In PMA (I) 12a hydroxyl of pillaromycinone (II, PMN), C20H18O7, is linked glycosidicaly to the 1'-anomeric hydroxyl of pillarose (III), C8H12O5.