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Strychnos usambarensis

This ring system is also contained in Serpenticine (294), Schoberidine (295), and Ophiorine (296) (Scheme 93). Picrasidine F (297) was identified as a hydrochloride in Picrasma quassioides and its structure was elucidated by an X-ray structure analysis (86CPB3228). Bleekerine (298) is an additional example. 3. 4. 5. 6 - T e t r a d e h y d r o 1 o n g i c a u d a t i n e (299)was identified in 1998 in Strychnos usambarensis collected from the Ivory Coast. The roots are the main ingredients of African arrow poisons. The absorption maxima were found at Amax = 204, 255, 308, and 367 nm in acidic as well as neutral solutions, thus suggesting a /1-carbolinium chromophore. A bathochromic shift was observed on deprotonation, due to the formation of a zwitterionic species (98P1263). [Pg.144]

Strychnos usambarensis (Loganiaceae) [root] S. Am. Indian poison curare component Derived synthetically from morphine, a morphinan isoquinoline alkaloid from Papaver somniferum (opium poppy) (Papaveraceae) [aerial]... [Pg.94]

Usambarensine Strychnos usambarensis [root mACh-R antagonist [arrow poison,... [Pg.177]

Usambarensine (Rubiaceae) Strychnos usambarensis DNA (intercalation) (mAChR,... [Pg.359]

Indole alkaloids Strychnos usambarensis n-BuOH-0.1 M NaCl (1 1) HSCCC... [Pg.1453]

The structure and relative stereochemistry of akagerine (75 a) have been confirmed by X-ray crystal structure analysis. 6,7-Dihydroflavopereirine (75b) is among the constituents of Strychnos usambarensis roots. ... [Pg.199]

Aspidosperma peroba) Pleiocarpa tubicina (= Pleiocarpa pycnantha var. tubicina) Strychnos amazonica Strychnos decussata Strychnos ignatii Strychnos toxifera Strychnos usambarensis... [Pg.108]

Yet another new structural type derived from vincoside is represented by akagerine (68), a eonstituent of the roots of Strychnos usambarensis, the source of an arrow poison in Central Africa. The structure and relative configuration of... [Pg.208]

From Strychnos usambarensis have been isolated usambarensine (102), 3, 4 -dihydro-usambarensine, and the tetrahydro-derivative usambarine (103a). [Pg.223]

Frederich M, Tits M, Golffin E, Philippe G, GielUer P, Mol PD, et al. In vitro and in vivo antimalarial properties of isostrychnopentamine, an indolomonoteipenic alkaloid from Strychnos usambarensis. Planta Med 2004 70 520-5. [Pg.79]

See other pages where Strychnos usambarensis is mentioned: [Pg.144]    [Pg.149]    [Pg.158]    [Pg.303]    [Pg.38]    [Pg.361]    [Pg.149]    [Pg.96]    [Pg.359]    [Pg.389]    [Pg.492]    [Pg.492]    [Pg.493]    [Pg.493]    [Pg.373]    [Pg.144]    [Pg.149]    [Pg.186]    [Pg.110]    [Pg.111]    [Pg.56]    [Pg.200]    [Pg.46]    [Pg.652]    [Pg.652]    [Pg.144]    [Pg.149]    [Pg.11]    [Pg.24]    [Pg.24]   
See also in sourсe #XX -- [ Pg.11 , Pg.38 ]

See also in sourсe #XX -- [ Pg.26 , Pg.124 , Pg.126 , Pg.1060 , Pg.1063 ]

See also in sourсe #XX -- [ Pg.124 , Pg.126 ]

See also in sourсe #XX -- [ Pg.217 , Pg.218 , Pg.221 , Pg.222 ]

See also in sourсe #XX -- [ Pg.652 ]



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