Novel Synthesis of the Ocular Age Pigment A2-E: New Method for Substituted Pyridine Synthesis via Azaelectrocyclization
作者:Katsunori Tanaka、Shigeo Katsumura
DOI:10.1021/ol991320u
日期:2000.2.1
[reaction: see text] The formal synthesis of the ocularagepigmentA2-E was achieved by the efficient one-pot preparation of the substituted pyridine, which involves the aza-6pi-electrocyclization of the Schiff base derived from (E)-3-carbonyl-2,4,6-trienal followed by oxidation.
A label with which labeling is easy when labeling a molecule, i.e., a label that has a high reaction rate upon labeling and that produces a high reaction yield, as well as a precursor for the production of the label are provided. This is achieved by a hexatriene-β-carbonyl compound represented by Formula (I), a hexatriene-β-carbonyl compound represented by Formula (II), a hexatriene-β-carbonyl compound represented by Formula (III) and a hexatriene-β-carbonyl compound represented by Formula (IV).
(wherein R1, R2, R3, R4, R5, X1, X2 and Z are as defined in the specification)
提供了一种在标记分子时容易标记的标签,即标记时反应速率高且反应产率高的标签,以及生产该标签的前体。由式(I)代表的六三烯-β-羰基化合物、由式(II)代表的六三烯-β-羰基化合物、由式(III)代表的六三烯-β-羰基化合物和由式(IV)代表的六三烯-β-羰基化合物可以实现上述目的。
(其中 R1、R2、R3、R4、R5、X1、X2 和 Z 如说明书中所定义)
EP2128124
申请人:——
公开号:——
公开(公告)日:——
NOVEL HEXATRIENE-BETA-CARBONYL COMPOUND
申请人:Fukase Koichi
公开号:US20100008857A1
公开(公告)日:2010-01-14
A label with which labeling is easy when labeling a molecule, i.e., a label that has a high reaction rate upon labeling and that produces a high reaction yield, as well as a precursor for the production of the label are provided. This is achieved by a hexatriene-β-carbonyl compound represented by Formula (I), a hexatriene-β-carbonyl compound represented by Formula (II), a hexatriene-β-carbonyl compound represented by Formula (III) and a hexatriene-β-carbonyl compound represented by Formula (IV).
(wherein R
1
, R
2
, R
3
, R
4
, R
5
, X
1
, X
2
and Z are as defined in the specification)