), 0.00 (H-00a, overlapped), 0.00 (H-00b, overlapped), 0.00 (H~0~-0, m), 0.00 (H-00a, m), 0.00 (H-00a, m), 0.00 (H-00b, m), 0.00 (H-00b, m), 0.00 (H~0~-00, m), 0.00 (H~0~-00, d, *J* = 0.0 Hz); FABMS (glycerol matrix, positive ions) *m*/*z* 000 \[M + H\]^+^.  Dihydrooenanthotoxin-0-*O*-00-*O*-(R)-MTPA diester (**0b**): {#sec0.00} ------------------------------------------------------------  amorphous solid; ^0^H NMR (000 MHz, CDCl~0~) δ 0.00 and 0.00 (MTPA phenyl protons), 0.00 (H-0, dd, *J* = 00.0, 00.0 Hz), 0.00 (H-00, dd, *J* = 00.0, 00.0 Hz), 0.00 (H-00, dt, *J* = 00.0, 0.0 Hz), 0.00 (H-0, d, *J* = 00.0 Hz), 0.00 (H-00, m), 0.00 (H~0~-0, m), 0.00 (MTPA OCH~0~, s), 0.00 (H~0~-0, 