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Kirkinine, a New Daphnane Orthoester with Potent Neurotrophic Activity from Synaptolepis kirkii
(University of Nairobi, 2000)
The bioassay-guided fractionation of a dichloromethane extract from the roots of Synaptolepis kirkii using neuronal viability as a model allowed the isolation of the new daphnane orthoester kirkinine (1a) as a powerful ...
A Benzochromene from the Roots of Pentas Bussei
(University of Nairobi, 2002)
A new homoprenylated benzochromene, methyl-5,10-dihydroxy-7-methoxy-3-methyl-3-[4-methyl-3-pentenyl]-3H-benzo[f]chromene-9-carboxylate (1), was isolated from the roots of Pentas bussei, collected from Kenya. The structure ...
Neurotrophic And Antileukemic Daphnane Diterpenoids From Synaptolepis Kirkii
(University of Nairobi, 2002-10)
Biological assay guided fractionation of a dichloromethane extract of Synaptolepis kirkii led to the isolation of four new and five known daphnane-type diterpene orthoesters, whose structure was established by spectroscopic ...
Chemical Constituents And Biological Activities Of Zanthoxylum Usambarense
(University of Nairobi, 2002-02)
Bioassay-guided fractionation of the dichloromethane extracts of the roots and the bark of Zanthoxylum usambarense led to the isolation of two physiologically active compounds, i.e. canthin-6-one 1 (fungicide) and pellitorine ...
Ground Thermal Profiles from Mount Kenya, East Africa
(University of Nairobi, 2004-06)
This paper presents and compares ground thermal regimes at 4200 and 4800 m a.s.l. on Mount Kenya's southern aspect. Temperatures were recorded using Tinytalk™ data loggers, installed at the ground surface and at depths of ...