申请人:SEKISUI MEDICAL CO., LTD.
公开号:US20190023726A1
公开(公告)日:2019-01-24
The purpose of the present invention is to provide a protecting group which improves the solubility of a compound having a functional group protected with the protecting group in an organic solvent and which is easily separated and purified after a reaction with avoiding solidification or insolubilization. Provided is a benzyl compound represented by Formula (1) where X
1
represents —CH
2
OR
14
(where R
14
represents a hydrogen atom, a halogenocarbonyl group, or an active ester-type protecting group), —CH
2
NHR
15
(where R
15
represents a hydrogen atom, a linear or branched alkyl group having 1 to 6 carbon atoms, or an aralkyl group), a halogenomethyl group, a methyl azide group, a formyl group, or an oxime; and at least one of R
1
, R
2
, R
3
, R
4
, and R
5
is a group represented by Formula (2), and the remainders each represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, where R
6
represents a linear or branched alkylene group having 1 to 16 carbon atoms; X
2
represents O or CONR
16
(where R
16
represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms); and A represents a group represented by Formula (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), or (13).
本发明的目的是提供一种保护基,该保护基提高了在有机溶剂中具有用保护基保护的官能团的化合物的溶解性,并且在反应后易于分离和纯化,避免固化或不溶化。提供一种由式(1)表示的苄基化合物,其中X1表示—CH2OR14(其中R14表示氢原子、卤代羰基团或活性酯基保护基),—CH2NHR15(其中R15表示氢原子、具有1至6个碳原子的直链或支链烷基基团或芳基烷基基团),卤代甲基基团,甲基叠氮基团,甲酰基团或肟基;以及R1、R2、R3、R4和R5中的至少一个是由式(2)表示的基团,其余部分分别表示氢原子、卤原子、具有1至4个碳原子的烷基基团或具有1至4个碳原子的烷氧基团,其中R6表示具有1至16个碳原子的直链或支链烷基基团;X2表示O或CONR16(其中R16表示氢原子或具有1至4个碳原子的烷基基团);A表示由式(3)、(4)、(5)、(6)、(7)、(8)、(9)、(10)、(11)、(12)或(13)表示的基团。