Reduction of Oxidoles with Sodium Bis(2-methoxyethoxy)aluminium Hydride, a Novel Reducing Agent
摘要:
1,3-Dimethyl-3-(2'-dimethylaminoethyl)-5-tetrahydropyranyloxyoxindole (5), obtained on C3-alkylation of oxindole (4), was reduced stereoselectively with sodium bis(2-methoxyethoxy)alum in um hydride (Vitride) to carbinolamine (6). Oxindoles (7, 8, 9, 10 and 11) similarly were reduced and cyclized to (+/-)-N-1-noresermethole (13), (+/-)-O-tetrahydropyranyl-N-1-noreseroline (14), (+/-)-physovenol methyl ether (15), (+/-)-esermethole (16), and (+/-)-N-1-benzylnoresermethole (17), respectively.
Pei XueFeng, Bi Sheng, Heterocycles, 39 (1994) N 1, S 357-360
作者:Pei XueFeng, Bi Sheng
DOI:——
日期:——
Reduction of Oxidoles with Sodium Bis(2-methoxyethoxy)aluminium Hydride, a Novel Reducing Agent
作者:Xue-Feng Pei、Sheng Bi
DOI:10.3987/com-94-s(b)39
日期:——
1,3-Dimethyl-3-(2'-dimethylaminoethyl)-5-tetrahydropyranyloxyoxindole (5), obtained on C3-alkylation of oxindole (4), was reduced stereoselectively with sodium bis(2-methoxyethoxy)alum in um hydride (Vitride) to carbinolamine (6). Oxindoles (7, 8, 9, 10 and 11) similarly were reduced and cyclized to (+/-)-N-1-noresermethole (13), (+/-)-O-tetrahydropyranyl-N-1-noreseroline (14), (+/-)-physovenol methyl ether (15), (+/-)-esermethole (16), and (+/-)-N-1-benzylnoresermethole (17), respectively.
Practical Total Syntheses of Physostigmines and of Phenserines: A Synopsis
作者:Arnold Brossi、Xue-Feng Pei、Qian-sheng Yu、Bao-yuan Lu、Nigel H. Greig