Compound

UV λmax in 95% (v/v) EtOH

UV λmax after Oxidn

Entry 9

413 nm

307 nm

Entry 10

341 nm

308 nm

Entry 11

331.91 nm

310 nm

Entry 12

372 nm

305 nm

Entry 13

371 nm

310 nm

Entry 14

372 nm

315 nm

Entry 15

348 nm

300 nm

Entry 16

355 nm

312 nm

Entry 17

353 nm

310 nm

Entry 18

426 nm

404 nm

Entry 19

402 nm

354 nm