The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The abso...The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?展开更多
双吲哚甲烷类化合物(BIAs)是一系列具有很好的生物活性的代谢产物.采用苊醌和取代吲哚为原料,合成2,2-二(1H-吲哚-3-基)-2H-苊-1-酮类化合物,对反应条件进行探索研究,得到了合成该类化合物的一种简单有效的方法.以10%的樟脑磺酸(CSA)为...双吲哚甲烷类化合物(BIAs)是一系列具有很好的生物活性的代谢产物.采用苊醌和取代吲哚为原料,合成2,2-二(1H-吲哚-3-基)-2H-苊-1-酮类化合物,对反应条件进行探索研究,得到了合成该类化合物的一种简单有效的方法.以10%的樟脑磺酸(CSA)为催化剂,无水乙醇为溶剂,在回流条件下反应30min左右,产物收率达到93%以上.产物均经过1 H NMR,13 C NMR,IR,MS和元素分析表征确认.展开更多
A compound ethyl(5S,6R)-2-(4-methylphenyl)-6-[(1R)-tert-butyldimethylsilyloxyethy]-penem-3-carboxylate was synthesized through displacement,acylation and Wittig cyclization reaction of optically active material(3R,4R)...A compound ethyl(5S,6R)-2-(4-methylphenyl)-6-[(1R)-tert-butyldimethylsilyloxyethy]-penem-3-carboxylate was synthesized through displacement,acylation and Wittig cyclization reaction of optically active material(3R,4R)-3-[(1R)-tert-butyldimethylsilyloxyethyl]-4-acetoxy-2-azetidi-none(4AA)upon thionocarboxlic acid.The intermediates and the target product were characterized by 1HNMR,IR,elementary analysis and MS.展开更多
文摘The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?
文摘双吲哚甲烷类化合物(BIAs)是一系列具有很好的生物活性的代谢产物.采用苊醌和取代吲哚为原料,合成2,2-二(1H-吲哚-3-基)-2H-苊-1-酮类化合物,对反应条件进行探索研究,得到了合成该类化合物的一种简单有效的方法.以10%的樟脑磺酸(CSA)为催化剂,无水乙醇为溶剂,在回流条件下反应30min左右,产物收率达到93%以上.产物均经过1 H NMR,13 C NMR,IR,MS和元素分析表征确认.
文摘A compound ethyl(5S,6R)-2-(4-methylphenyl)-6-[(1R)-tert-butyldimethylsilyloxyethy]-penem-3-carboxylate was synthesized through displacement,acylation and Wittig cyclization reaction of optically active material(3R,4R)-3-[(1R)-tert-butyldimethylsilyloxyethyl]-4-acetoxy-2-azetidi-none(4AA)upon thionocarboxlic acid.The intermediates and the target product were characterized by 1HNMR,IR,elementary analysis and MS.
