Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydro-, (3'S)- → 6'-[2-(2-methoxyethoxy)ethyl]-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,8'-[1,3]thiazolo[5,4-e]indol]-7'(6'H)-one

Participants

Reaction Steps

Following the procedure as described in EXAMPLE 9.70 and making non-critical variations using 2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,8′-[1,3]thiazolo[5,4-e]indol]-7′(6′H)-one to replace (8S)-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one, 6′-[2-(2-methoxyethoxy)ethyl]-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,8′-[1,3]thiazolo[5,4-e]indol]-7′(6′H)-one was obtained (37%): mp 156-158° C.; 1H NMR (300 MHz, CDCl3) δ8.77 (s, 1H), 8.07 (d, J=8.6 Hz, 1H), 7.32 (d, J=8.6 Hz, 1H), 6.56 (s, 1H), 6.23 (s, 1H), 4.83 (ABq, 2H), 4.23-4.04 (m, 6H), 3.85-3.77 (m, 2H), 3.67-3.61 (m, 2H), 3.52-3.46 (m, 1H), 3.32 (s, 3H); MS (ES+) m/z 455.1 (M+1).

Provenance & Evidence