The present invention provides an isoquinuclidine derivative which can be used to easily synthesize oseltamivir or an analog thereof. In particular, the present invention provides an isoquinuclidine derivative represented by the following formula (1) or an enantiomer thereof:
wherein in the formula (1), A represents a protective group for the nitrogen atom; R
1
to R
1
each independently represent an alkyl group which may have a substituent, an aryl group which may have a substituent, or a hydrogen atom; and X represents a halogen atom.
本发明提供了一种
异喹啉衍
生物,可用于轻松合成
奥司他韦或其类似物。特别地,本发明提供了以下公式(1)或其对映体所表示的
异喹啉衍
生物:其中,在公式(1)中,A代表
氮原子的保护基;R1至R4各自独立地表示可以具有取代基的烷基,可以具有取代基的芳基或
氢原子;X表示卤素原子。