Buxus alkaloids. XIV.* Alkaloids from Buxus sempervirens var. angustifolia WEST

Various species of common box (Buxus) are cultivated in the Arboretum of the Slovak Academy of Sciences in Mlyňany under the same soil and climatic conditions; consequently, the examination of alkaloids produced by those plants is of chemotaxonomical importance. From this locality we investigated so far alkaloids from Buxus sempervirens L.[l,2], B. microphylla SIEB, et ZUCC. var. sinica REHD. et WILS. [3], B. sempervirens var. bullata KIRCHN. [4], B. sempervir­ ens var. argentea HORT, ex STEUD. [5], and B. sempervirens var. angustifolia WEST. Alkaloids present in the last species were found also in other plants of the genus Buxaceae with the difference that the main alkaloid of Buxus sempervirens var. angustifolia was cyclobuxamine-H. In addition to alkaloids the presence of sterols and triterpenes in Buxus sempervirens L. was investigated [6]; these substances could be intermediates in the biosynthesis of alkaloids.