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Stemmadenia

Creoceras, Rejoua, Schzozygia, Stemmadenia and Voacanga, have, with all their species, remained intact with their original names. [Pg.144]

From Stemmadenia donnell-smithii, besides iboga alkaloids and voac-amine, the indole (+ )-quebrachamine (L), mp 147°—149°, [a]D +111° (CHCI3), and the indole stemmadenine (LIV, a— x or a— y bond), mp 199°-200° (dec.), [ ]D + 324° (pyridine), were isolated (11). The latter alkaloid also occurs in Diplorrhynchus condylocarpon (43) along with condylocarpine, shown (43a), to be LV (rather than LVI), and into which it was converted by potassium permanganate oxidation (44). Stem-... [Pg.224]

The earlier literature on quebrachamine has been dealt with in previous volumes, and its occurrence in some new sources is recorded in Table I. Most important from the biogenetic point of view is the existence in nature of both optical enantiomers. The common levorotatory form corresponds in absolute configuration to aspidospermine (II, vide infra), while the dextrorotatory form found in Stemmadenia donnell-smithii (8) is related to (+ )-pyrifolidine (XLVI, 9, 10) and to (— )-tabersonine (XCII, 7). [Pg.337]

Stemmadenine (CCXIII) was first isolated from Stemmadenia donnell-smithii (8), where it occurs with (+ )-quebrachamine (I) and some iboga-type bases. Subsequently, it has also been found in Diplorrhyncus condylocarpon ssp. mossambicensis, where it occurs together with condylocarpine (CCXV), normacusine-B (Section VIII, B), two yohimbines, norfluorocurarine, and mossambine (Section VI, B and C, Ref. 116). [Pg.457]

Two unnamed alkaloids, mp 233°-235° (dec.) and 135°-139°, respectively, were isolated from Stemmadenia donnell-smitkii, but no further information is available on these at the time of writing (8). [Pg.505]

Conopharyngia (Tabernaemontana) spp., Stemmadenia spp., Tabernanthe iboga (Apocvnaceae)... [Pg.138]

A characteristic of the genera Callichilia, Conopharyngia, Gabunia, Stemmadenia, Tabernaemontana, and Voacanga of the Apocynaceae family is the presence of bisindole alkaloids of the voacamine type, the prototype of this group being voacamine itself. All these alkaloids are composed of a vobasine-like [vobasine,... [Pg.242]

Isolation Ddo ittsie.- Ho ii ,AnnalesPharmaceutiquesFrangaisess 30,1946 Ta-bemanthe ihoga) Didkel, Journal of the American Chemical Society 80 123,1958 Tabemaemontana, Stemmadenia spp.)... [Pg.541]

Stemmadenia donnell-smUhii (Rose) Woods. Stemmadenia galeottiana (A. Rich.) Miers Stemmadenia pubescena Benth. (Stemmadenia ohovata K. Schum.)... [Pg.23]

Stemmadenia tomentoaa Greenman var. palmeri Tabernaemontana affinis Muell. Arg. [Peschiera ajfflnia (Muell. Arg.) Miers]... [Pg.23]

See other pages where Stemmadenia is mentioned: [Pg.14]    [Pg.17]    [Pg.18]    [Pg.203]    [Pg.336]    [Pg.337]    [Pg.357]    [Pg.453]    [Pg.505]    [Pg.101]    [Pg.110]    [Pg.120]    [Pg.205]    [Pg.3]    [Pg.3]    [Pg.3]    [Pg.3]    [Pg.8]    [Pg.8]    [Pg.9]    [Pg.9]    [Pg.10]    [Pg.11]    [Pg.22]    [Pg.30]    [Pg.32]    [Pg.35]    [Pg.110]    [Pg.114]    [Pg.1427]    [Pg.234]    [Pg.81]   
See also in sourсe #XX -- [ Pg.17 , Pg.18 ]

See also in sourсe #XX -- [ Pg.2 , Pg.2 , Pg.3 , Pg.3 , Pg.3 , Pg.3 , Pg.4 , Pg.4 , Pg.5 , Pg.6 ]

See also in sourсe #XX -- [ Pg.230 ]



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Stemmadenia donnell-smithii

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