“…Photoreactions of (E)-6 ab-af, ba-bf were also performed in a similar manner. (7), 91 (24), 108 (5), 115 (24), 128 (13), 141 (12), 165 (33), 178 (39), 191 (60), 202 (27), 215 (32), 241 (22), 254 (41), 268 (64), 280 (10), 299 (100, M + ); HRMS (EI +) calcd for C 21 H 17 NO: 299.1310, found: 299.1308. (cis-7 aa): 0.009 g, 20 % yield.…”