HCID 16083027, compound → HCID 11322652, compound

Participants

Reaction Steps

6-Methoxy-11,15-dioxa-cyclopenta[a]phenanthren-12-one (4e) The procedure was identical to that used for the preparation of 4a: 85% yield (starting with 12 mg 3e); mp 194-195° C.; LC/MSD-Trap-positive (m/z, %): 267 (M++1, 100), 289 (M++Na, 30); 1H NMR δ 4.11 (1H, s, OCH3-6), 7.07 (1H, d, J=2.1 Hz, H-17), 7.13 (1H, s, H-7), 7.68 (3H, m, H-2, 3, 16), 8.31 (1H, dd, J=1.8 Hz, 6.9 Hz, H-4), 8.57 (1H, dd, J=1.8 Hz, 7.8 Hz, H-1).

Provenance & Evidence