Alkaloids from Lupinus argenteus var. stenophyllus

Alkaloids From Castilleja miniata and Penstemon whippleanus, Two Host Species For the Plume Moth, Amblyptilia (Platyptilia) pica

“…A portion of the 430-mg residue was also analyzed by gc/ms. This corroborated the classical isolation studies and also provided evidence for carbomethoxypedicularine (11). (+)-Boschniakine 9.-This was identified by optical rotation, uv, 'H-nmr (360 MHz), 13C-nmr, and mass spectra and by a comparison with a standard sample.…”

“…int.) 262(1), 247(1), 223(100), 207(2), 124 (11), 112(22), 109(3), 58(54); NH3ci ms 265(100), 263(25), 249 (8), 223(25), 112 (5), 58 (20). These data correspond quite closely with those from tetrahydrorhombifoline (6,7) except that the 223 base peaks in the ei ms and the quasimolecular ion in the NH3 ci ms were exactly 16 mass units higher than in tetrahydrorhombifoline.…”

“…L. argenteus var. stenopbyllum was reported (11) to contain -isolupanine and thermopsine as the major alkaloids along with minor amounts of sparteine, dehydrolupinine, lupanine, anagyrine, and ß-isosparteine. Penstemon whippleanus.-Preliminary studies indicated that stems and leaves of P. whippleanus contained small amounts of alkaloids, while the blossoms were relatively high in alkaloid content.…”

The Alkaloid Patterns of Cell Suspension Cultures and Differentiated Plants of Baptisia Australis and Their Biogenetic Implications

“…results). The 5,6-dehydrolupanine (4) has been reported so far only from species which contain both lupanine (6) and -pyridone alkaloids (12,16,20). It is plausible to place this compound as the intermediate between lupanine (6) and anagyrine (8).…”

Identification of toxic alkaloids from the calcaratus subspecies of Lupinus arbustus

“…Extraction and Isolation of Alkaloids. The dried, powdered (40 mesh) aboveground plant parts (200 g) were homogenized with MeOH and processed as usual (Keller and Zelenski, 1978) to give 1.30 g (0.65% of dry weight) of a crude alkaloid extract. TLC of this mixture over 0.25-mm layers of silica gel 60 GF 254 (Merck) with CHCl3-MeOH-18 M NH4OH (100:10:1) indicated the presence of three alkaloids located at R¡ 0.73,0.44, and 0.31 after spraying with Dragendorff reagent.…”