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1.
Alexandria Journal of Pharmaceutical Sciences. 1995; 9 (3): 217-220
in English | IMEMR | ID: emr-36224

ABSTRACT

Several new pyrazolopyridotriazines, pyridines, 4H-pyran and H-indeno [1,2-b] pyran derivatives were prepared from beta-dicarbonyl compounds I, II and the ylidenes III and IV as starting materials


Subject(s)
Pyridines/chemical synthesis , Pyrans/chemical synthesis
2.
Alexandria Journal of Pharmaceutical Sciences. 1994; 8 (1): 23-24
in English | IMEMR | ID: emr-31559

ABSTRACT

Phytochemical study of the Euphorbia retusa resulted in the isolation and identification of four triterpenes [erythrodiol [I], Uvaol [I], Betulin [II] and 24-methylene-9,19-cyclolanostan-3 beta-yl palmitate [IV]]. The latter was isolated for the first time from this species. Identification of the isolated compounds was established by spectral methods


Subject(s)
Plant Extracts
3.
Egyptian Journal of Pharmaceutical Sciences. 1994; 35 (1-6): 553-559
in English | IMEMR | ID: emr-32424

ABSTRACT

Constituents of Onopordon alexandrinum were extracted, defatted and analyzed using column chromatography to give taraxasterol [1], lupeol [2], beta-sitosterol [3], stigmasterol [4], scutellarein 4'-methyl ether [5] and takakin [6]. The structure of the hitherto isolated products were inferred by high-field 1H-NMR spectroscopy


Subject(s)
Steroids
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