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Neolignans occurrence

Three sesquilignans 34, 35 and 36 are the first confounds to be reported from Salicaceae. Also, the occurrence of these confounds 34, 35 and 36, along with neolignans 30 and 31, lends support to the biosynthetic hypothesis of their formation by the sequiential coupling of individual phenylpropane units. [Pg.647]

Table 2. Structure and Occurrence of Neolignans (symbols for Ar-groups Table 3, symbols for source species Table 4)... Table 2. Structure and Occurrence of Neolignans (symbols for Ar-groups Table 3, symbols for source species Table 4)...
Table 8. Postulated Biosynthetic Relationship and Occurrence in Lauraceae Species (Numbered acc. to Table 4) of Type 8—11 Neolignans... Table 8. Postulated Biosynthetic Relationship and Occurrence in Lauraceae Species (Numbered acc. to Table 4) of Type 8—11 Neolignans...
Fig. 3.13. Biosynthetic derivation and occurrence in the two blocks of angiosperms of systematically significant biogenetic groups of micromolecules - e.g., neolignans are common in the more primitive (as featured by the scale of Sporne indices) magnolialean plant groups gallo- and ellagi-tannins are more common in the primitive rosiflorean groups and steroid alkaloids are more common in the advanced rosiflorean groups... Fig. 3.13. Biosynthetic derivation and occurrence in the two blocks of angiosperms of systematically significant biogenetic groups of micromolecules - e.g., neolignans are common in the more primitive (as featured by the scale of Sporne indices) magnolialean plant groups gallo- and ellagi-tannins are more common in the primitive rosiflorean groups and steroid alkaloids are more common in the advanced rosiflorean groups...
Ethnopharmacological interest in Myristicaceae species first evidenced by Schultes in 1954 (3), inspired Gottlieb and co-workers to develop phytochemical investigations on these arboreal plants dispersed over Amazonia. The occurrence of Y la ones, flavonoids and neolignans was observed in trunk wood and a... [Pg.85]

Table n. Latitude, Sporne Indices (SI), Herbaceousness Indices (HI), Numbers of Occurrences per Family (NO/F) of Neolignans (NLG), Lignans (LGN) 18,19% Caffeoyltannins (CAF), Proanthocyanidins (PRO), Gallo- and Ellagitannins (GAL) 20% Steroids (STE) (9), Triterpenic Saponins (SAP) 21-27), Iridoids (IRI) 28% Polyacetylenes (POL) 29) and l rrolizidine Alkaloids (PYR) (Ferreira, Z.S., Universidade de Sao Paulo, unpublished data) and Percent Values of Shikimate Derivatives (NLG+LGN+CAF+PRO+GAL) (SH%) of Five DifTerent Regions... [Pg.192]

See other pages where Neolignans occurrence is mentioned: [Pg.216]    [Pg.216]    [Pg.350]    [Pg.2]    [Pg.643]    [Pg.4545]    [Pg.323]    [Pg.60]    [Pg.62]    [Pg.220]    [Pg.169]   
See also in sourсe #XX -- [ Pg.7 ]



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Neolignan

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