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Two novel diterpenoids, thecacorins A ( 1 ) and B ( 2 ), were isolated from Thecacoris batesii and their structures were established as ent -3 b ,20-epoxy-16-kaurene-3 a ,12 b -diol and ent -15-beyerene-2 b ,3 b -diol, respectively, on the basis of extensive spectroscopic analysis, especially, 1D NMR spectra, in conjunction with 2D experiments, COSY, NOESY, HMQC and HMBC. KEY WORDS: D iterpenoids, Thecacorin A, Thecacorin B, Ent -3 b ,20-epoxy-16-kaurene-3 a ,12 b -diol,  Ent -15-beyerene-2 b ,3 b -diol, Thecacoris batesii Bull. Chem. Soc. Ethiop. 2007 , 21(1), 89-94.

bulletin of the chemical society of ethiopia

&lt;b&gt;&lt;i&gt;Ent&lt;/i&gt;-kaurene and &lt;i&gt;ent&lt;/i&gt;-beyerene diterpenoids and other constituents of &lt;i&gt;Thecacoris batesii&lt;/i&gt;&lt;/b&gt;