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Ilmu Kimia Tanaman I.auraceae Indonesia: Vi. Kriptokaryon dari Cryptocarya Laevigata Bl. (Lauraceae)

Sjamsul Arifin Achmad, Effendi, Emilio L. Ghisalberti, Euis Holisotan Hakim, Lia Dewi Juliawaty, Lukman Makmur & Allan H. W


Abstract. Extraction of the root and the tree barks of Cryptocarya laevigata Bl. (Lauraceae) with n-hexane yielded a chalcone identified as cryptocaryone (I). The structure of this compound had been elucidated based on spectroscopic measurements and X-ray crystal analysis. Conclusions about the structure of cryprocaryone (I) confirm the previous suggestion, which revised the structure (ll) suggested earlier. C. laevigata is the second species of Lauraceae which contains cryptocaryone (I). Furthermore, cryptocaryone (I) is a second naturally occurring flavonoid containing a reduced A ring system which has so far been isolated.


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