@article{3054510,
    title = "Selective amination of secoiridoid glycosides to give monomeric
pyridine, dimeric pyridine, and naphthyridine alkaloids",
    author = "Ranarivelo, Y and Magiatis, P and Skaltsounis, AL and Tillequin, F",
    journal = "NATURAL PRODUCT LETTERS",
    year = "2001",
    volume = "15",
    number = "2",
    pages = "131-137",
    publisher = "TAYLOR & FRANCIS LTD LONDON",
    issn = "1057-5634",
    doi = "10.1080/10575630108041270",
    keywords = "secoiridoids; monoterpene alkaloids; pyridines; naphthyridines",
    abstract = "Treatment of the secoiridoids oleuropein (4), ligstroside (5) and
methyloleoside (6) by beta -D-glucosidase in the presence of ammonium
chloride led exclusively to monomeric pyridine alkaloids 7, 1, and 8.
Dimeric 3,4,5-trisubstituted pyridines were obtained from methyloleoside
(6) when ammonium chloride was generated in the reaction mixture by
successive additions of ammonia and hydrochloric acid. The use of
ammonium acetate permitted conversion of secoiridoids 4 and 5 into the
naphthyridine alkaloid jasminine (3)."
}