Biogenetic Conversion of Tetrahydroisoquinoline−Monoterpene Glucosides into Benzopyridoquinolizine Alkaloids of Alangium lamarckii

Biogenetic Conversion of Tetrahydroisoquinoline−Monoterpene Glucosides into Benzopyridoquinolizine Alkaloids of <i>Alangium lamarckii</i> Isolation of Two Unusual Tetrahydroisoquinoline-Monoterpene Glucosides from Alangium lamarckii as Possible Intermediates in the Non-enzymatic Formation of Alangimarine from Alangiside Three Tetrahydroisoquinoline-Monoterpene Glucosides from Alangium lamarckii: The First Occurrence of Glucosides with the Same Absolute Configurations as Deacetylisoipecoside, a Key Intermediate in the Biosynthesis of Ipecac Alkaloids. Five Tetrahydroisoquinoline-Monoterpene Glucosides and a Tetrahydro-β-carboline-monoterpene Glucoside from Alangium lamarckii Tetrahydroisoquinoline-monoterpene and iridoid glycosides from Alangium lamarckii Acylated tetrahydroisoquinoline-monoterpene glucosides from Alangium lamarckii Five tetrahydroisoquinoline-monoterpene glycosides with a disaccharide moiety from Alangium lamarckii Tetrahydroisoquinoline-monoterpene glucosides from Alangium lamarckii and Cephaelis ipecacuanha Novel benzopyridoquinolizine bases from Thw. The biosynthesis of β-carboline and quinolizidine alkaloids of Alangium lamarckii