The identity of the compound as lupeol was confirmed by m.m.p., IR and MS of the acetate. The CHCl₃ solution, after the removal of lupeol, was concentrated to a small volume and chromatographed on alumina to give a compound which crystallized from EtOH to give needles, C₃₀H₅₀O₂, m.p. 248-250° (Found: C, 81.37; H, 11.39. Cal. for C₃₀H₅₀O₂; C, 81.39; H, 11.38%). IR (Nujol) ν 3450, 1665, 1625 and 1057 cm⁻¹. Acetate (di): C₃₄H₅₄O₄, prisms from EtOH, m.p. 223°, which had superimposable IR, NMR and MS with that of an authentic sample of betulin diacetate. Trunk-wood (1.4 kg) of Licaria puchury-major collected at km-14 of the Manaus Itacoatiara road was extracted with benzene at room temp. The extract (40 g) was chromatographed on silica. Elution with light petrol. gave safrol (12 ml). Elution with light petrol.-benzene (1:1) gave first sitosterol (350 mg) and next eugenol (8 ml). Elution with benzene gave 3,4-methylenedioxycinnamaldehyde (200 mg, m.p. 84-85°, lit. m.p. 84-85°). Elution with benzene-AcOEt (4:1) gave first 3,4-methylenedioxycinnamyl alcohol (80 mg, m.p. 75-77°, lit. m.p. 123° which we were not able to confirm) and next syringic aldehyde (120 mg, m.p. 108-110°, lit. m.p. 109-110°). The identifications were obtained by spectral means and confirmed by direct comparison with authentic samples. Surprisingly, 3,4-methylenedioxycinnamyl alcohol and 3,4-methylenedioxycinnamaldehyde seem to be rare natural products; the aldehyde was previously found in two other Lauraceae, while the alcohol does not seem to have been isolated previously. The Et₂O extract of dry bark of Lindera erythrocarpa was chromatographed on silica and eluted with light petrol. (b.p. 45-60°), followed by benzene and EtOAc. Benzene eluted linderone (I), orange yellow needles, C₁₆H₁₄O₅, m.p. 92-93.5° (TLC, IR, UV, NMR and m.m.p.). Ethyl acetate afforded methyllinderone (II), yellow needles, C₁₇H₁₆O₅, m.p. 84-85° (TLC, IR, UV, NMR and m.m.p.). The presence of lucidone (III) and methyllucidone (IV) were only detected by TLC. The presence of I, II, III and IV were detected by TLC from the Et₂O extract of dry leaves.