Abstract

-The leaf exudates of Aloe cremnophila and A. jacksonii have yielded four chromone and two anthrone derivatives which were identified on the basis of spectral evidence. (−)-Homonataloin, aloesin, aloeresin B and the 2′- O-tigloyl ester of aloesin were obtained from the leaf exudates of both species, whereas (+)-homonataloin and 2- carboxyethenyl-5,7-dihydroxychromone were isolated only from A. cremnophila.

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