Browsing University Publications by Author "Mobarak, Z. M."
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Constituents of catha edulis (alkaloids, triterpenoids and related substances and saponins)
Rizk, A. M. [عبد الفتاح محمد رزق]; Mobarak, Z. M.; El-Shihi, T. ( Qatar University , 1989 , Article)The study of the alkaloids of khat samples from Egypt and Yemen revealed qualitative and quantitative differences. Cathine and the dimer of cathinone occured in both samples, while norephedine was detected only in Yemen ...