13C NMR Spectra of some D:A-friedo-oleananes☆

Gunatilaka, A. A. Leslie; Nanayakkara, Nadeeshani; Wazeer, Mohamed I. M.

doi:10.1016/0031-9422(83)85038-9

Cited by 32 publications

(13 citation statements)

References 11 publications

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“…The other known com pounds in cluded twenty-one coumarins [schinicoumarin, 3 acetoxyaurapten, 3 epoxycollinin, 3 schininallylol, 3 schinilenol, 3 schinindiol, 3 aurapten, 3 collinin, 3 acetoxycollinin, 3 anisocoumarin H, 4 7-[(E)-7 -hydroxy-3 ,7 -dimethyl-octa-2 ,5 -dienyloxy]-coumarin, 5 methyl -schinilenol, 6 8-methoxyanisocoumarin H, 6 herniarin, 13 hydrangetin, 6 umbelliferone, 6 aesculetin dimethyl ether, 6 5,7,8-trimethoxycoumarin, 14 scopoletin, 4 xanthyletin, 15 and bergapten 16 ], 11 al ka loids [skimmianine, 3 robustine, 6 dictamnine, 3 -fagarine, 6 (+)-platydesmine, 6 norchelerythrine, 3 oxynitidine, 3 arnottianamide, 6 isoarnottianamide, 6 transfagaramide, 17 and 4-methoxy-1-methyl-2-quinolone 3 ], one furan [5-(hydroxymethyl)-furfural 18 ], four benzenoids [phydroxycinnamate, 6 p-hydroxybenzaldehyde, 19 mix ture of docosanyl ferulate and tetracosyl ferulate 20 ], three chlorophylls [pheophytin-a, 21 13 2 -hydroxy-(13 2 -S)-pheophytin-a, 21 and aristophyll-c 22 ], four triterpenoids [friedelin, 3 friedelinol, 23 -amyrin ac e tate 19 22 stigmasterol, 22 campesterol, 22 and -sitosterol-3-O--D-glucoside 22 ]. These com pounds were iden ti fied by com par i sons of their spec tral data (UV, IR, 1 H NMR, MS) with the data from the cor re spond ing lit er a ture or au then tic sam ples.…”

Section: Re Sults and Discussionmentioning

confidence: 99%

Chemical Constituents from the Leaves of Zanthoxylum Schinifolium

Cheng

Yang

Lin

et al. 2002

J Chinese Chemical Soc

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a Grad u ate In sti tute of Phar ma ceu ti cal Sci ences, Kaohsiung Med i cal Uni ver sity, Kaohsiung 807, Tai wan, R.O.C. b School of Phar macy, Chia Nan Uni ver sity of Phar macy and Sci ence, Tainan, Tai wan, R.O.C.cis-Fagaramide (1), a new am ide, to gether with fifty known com pounds, have been iso lated from the leaves of Zanthoxylum schinifolium. These known com pounds in clude twenty-one coumarins, eleven al kaloids, one furan, four benzenoids, three chloro phylls, four triterpenoids, one diterpenoid, one sesquiterpenoid, and four ste roids. The struc tures of these com pounds were de ter mined by means of spec tral anal y ses.* Cor re sponding au thor.

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Section: Re Sults and Discussionmentioning

confidence: 99%

Chemical Constituents from the Leaves of Zanthoxylum Schinifolium

Cheng

Yang

Lin

et al. 2002

J Chinese Chemical Soc

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“…The above spectral features are in close agreement to those observed for fridelin. 17 On the basis of the data , the identity of compound 1 has been established as fridelin and was substantiated by co-TLC with the reference sample. Hz) centered at  6.81 and 6.88, respectively.…”

Section: Resultsmentioning

confidence: 99%

Secondary Metabolites From Different Extractives of Stereospermum suaveolens

Begum

Haque

Nahar

et al. 2015

Dhaka Univ. J. Pharm. Sci

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ABSTRACT:The methanol extract of leaves and bark of Stereospermum suaveolens has been subjected to repeated-chromatographic separation and purification processes to isolate the secondary metabolites. A total of seven compounds have been isolated from the plant, which were identified as fridelin (1), β-sitosterone (stigmast-5-en-3-one) (2), stigmasterol (3), 3,4-dimethoxy cis-caffeic acid (4), 3β-friedelanol (5), β-amyrone (6) and glyceryl tricaprate (7). The structures of the isolated compounds were elucidated by extensive NMR studies.

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“…The structures of known compounds 2 ± 10 ( Fig. 1) were elucidated by comparing their physical (mp) and spectroscopic ( 1 H-, 13 and d 6.06). The above information was consistent with a tetracyclic triterpene possessing a side chain at C-17.…”

Section: Resultsmentioning

confidence: 99%

Bioactive Compounds from Celaenodendron mexicanum

Camacho¹,

Mata²,

Castañeda³

et al. 2000

Planta med

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Bioactivity-directed fractionation of the CHCl3-MeOH extract of the leaves of Celaenodendron mexicanum by means of the brine shrimp lethality test and chromatographic techniques led to the isolation of three carboxylic acid triterpenes, the new tirucalla-type triterpene, 3 alpha-hydroxytirucalla-7,24Z-dien-26-oic acid, 3-oxotirucalla-7,24Z-dien-26-oic acid, and epi-oleanolic acid, and three biflavonoids amentoflavone, podocarpusflavone A, and podocarpusflavone B. Four non-active compounds friedelin, maytensifolin B, 3 beta-hydroxyfriedelan-16-one, and celaenodendrolide were also obtained. epi-Oleanolic acid was the most active against brine shrimps with LC50 value of 23.3 microM. In addition, all isolates were tested for in vitro antiprotozoal and cytotoxic activities. 3-Oxotirucalla-7,24Z-dien-26-oic acid and epi-oleanolic acid showed the highest activity against Leishmania donovani promastigotes with IC50 values of 13.7 and 18.8 microM, respectively. Only 3-oxotirucalla-7,24Z-dien-26-oic acid showed activity against Trypanosoma brucei brucei bloodstream forms with IC50 value of 16.8 microM.

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13C NMR Spectra of some D:A-friedo-oleananes☆

Cited by 32 publications

References 11 publications

Chemical Constituents from the Leaves of Zanthoxylum Schinifolium

Chemical Constituents from the Leaves of Zanthoxylum Schinifolium

Secondary Metabolites From Different Extractives of Stereospermum suaveolens

Bioactive Compounds from Celaenodendron mexicanum

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