Andrea Lutz-Röder

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Treatment of canthaxanthin (beta,beta-carotene-4,4'-dione) (1) with nickel peroxide in dichloromethane yielded a series of cleavage products, i.e., 4-oxo-beta-ionone (2), (7E, 9E)-4-oxo-beta-apo-11-carotenal (3a), (7E, 9Z)-4-oxo-beta-apo-11-carotenal (3b), 4-oxo-beta-apo-13-carotenone (4), 4-oxo-beta-apo-14'-carotenal (5), 4-oxo-beta-apo-12'-carotenal (6),(More)
During mating male bushcrickets transfer large spermatophores, which have been demonstrated to play an important role in female nutrition and egg production. Until now only relatively unspecific substances such as water and proteins were known to be present within these spermatophores. We found that in the bushcricket Ephippiger zelleri the spermatophores(More)
The 9-O-beta-D-glucopyranosides of (6R)-3-oxo-4-hydroxy-7,8-dihydro-alpha-ionol 1 and 3-oxo-5,6-epoxy-beta-ionol 2 were isolated from quince leaves. The glycosidic extract was obtained by XAD-2 adsorption and MeOH elution. After DCCC separation and flash chromatography, purification by high performance liquid chromatography was carried out. The novel quince(More)
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