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The first alkaloid based on these ring systems was discovered in 1992 in the European species Exochomus quadripustulatus.Aiter recrystallization of its hydrochloride salt, a single-crystal X-ray diffraction study of exochomine (18) established the structure and absolute configuration of this alkaloid [32]. [Pg.186]

See other pages where Exochomus quadripustulatus is mentioned: [Pg.92] [Pg.256] [Pg.148] [Pg.92] [Pg.256] [Pg.148]