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Journals and Conferences
1. The plantHaplophyllum acutifolium has yielded eudesmine, acetamide, skimmianine, and a new base with the composition C16H19NO, mp 122–123°C, which has been called acutine. 2. It has been shown that acutine has the structure of 2-(hept-4-enyl)-1,4-dihydroquinolin-4-one.
We have inves t igated the tubers of Aconitum karako l icum collected f rom two growth s i tes in the per iod of the wi ther ing of the epigeal par t . F r o m a sample col lected in the upper r eaches of the R. Tyup, T e r s k e i A l a t a u range of the Kirghiz SSR, in addition to aconitine and songorine  found previous ly , we have i so la ted napell… (More)
From the epigeal part of the plantHaplophyllum leptomerum Lincz. et Vved. growing in the mountains of Babatag, Tadzhik SSR, which has not been studied previously, have been isolated β-sitosterol, the known alkaloids γ-fagarine, skimmianine, and N-methyl-2-phenyl-4-quinolone, and the new alkaloid leptomerine. On the basis of spectral characteristics, the… (More)
It has previously been reported that a number of bases have been isolated from the combined alkaloids of Roemeria r e f rac ta [1--5]. Continuing the separation of the readi ly water-soluble fraction of the mixed bases obtained from 470 kg of the plant, we have isolated 140 mg of crystals with rap 223-224* C (from aqueous methanol) . From its properties the… (More)
1. The trans-linkage of rings A/B in compounds (I-III) and of rings B/C and E/F in veralodine and the equatorial orientation of the OH group at C3 in isogermine has been confirmed by CD spectroscopy. 2. A relationship has been established between the nature of the substituents and the configurations at C20 and the sign of the CE in the 200 nm region for… (More)
The alkaloids of B~is sempervirens L. (common box) cultivated in the environs of the town of Kislovodsk had not been studied. We have begun an investigation of the alkaloids of this plant collected on May 21, 1978. The amounts of alkaloids were determined by chloroform extraction: in shoots of the first year -2.39%; in young roots -2.11%; in leaves and… (More)
The new glycoalkaloid haplosinine has been isolated from the epigeal part ofHaplophyllum perforatum (M. B.) Kar. et Kir., and its structure has been established on the basis of chemical transformations and a comparative analysis of its13C NMR spectra with those of known compounds as haplopine 7-O-[O-β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranoside].
Continuing the ch roma tog raphy of the to ta l alkaloids of the epigeal par t of It. acutifol ium (family Rutaceae) on a lumina i l l , f rom the e the rea l e luates a f t e r the isolat ion of the sk immianine we have obtained a c rys ta l l ine subs tance with the composi t ion C22I-I2606, mp 107-108°C (from e ther and acetone), [ot]~ + 60.5 ° (c 2.384;… (More)
The NMR spectrum of substance (I) c lear ly shows two one-proton signals at 2.47 ppm (H-4) and 3.30 ppm ( H l ) . Because of laheir nonequivalence, the two protons of the methylenedioxy group form an AB system and give a quadruplet at 4 .10 ppm with a geminal interact ion constant JAB = 2.0 Hz. At 6.10, 6.18, 6.21 ppm there are sharp signals of the three… (More)
The plantFumaria vaillantii Loisl. has yielded protopine, fumaridine, fumaramine, d-α-hydrastine,l-adlumine, d-bicuculline, andl-adlumidine (this being the first time thatl-adlumidine has been isolated from the genusFumaria), and the new base vaillantine. On the basis of UV, IR, NMR, and mass spectra, and also the identity of O,O-dimethylvaillantine with… (More)