4-chloro-1-(diphenylmethyl)-3-hydroxy-3-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-1,3-dihydro-2H-indol-2-one → 8-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-6-(4-methoxybenzyl)-6,8-dihydro-7H-[1,3]thiazolo[5,4-e]indol-7-one

Participants

Reaction Steps

Following the procedure as described in PREPARATION 4C, and making non-critical variations using 8-hydroxy-8-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-6-(4-methoxybenzyl)-6,8-dihydro-7H-[1,3]thiazolo[5,4-e]indol-7-one to replace 4-chloro-1-(diphenylmethyl)-3-hydroxy-3-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-1,3-dihydro-2H-indol-2-one, 8-(7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-6-(4-methoxybenzyl)-6,8-dihydro-7H-[1,3]thiazolo[5,4-e]indol-7-one was obtained (89%) as a colorless solid: MS (ES+) m/z 461.1 (M+1).

Provenance & Evidence