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Microsoft Word - Prachayasittikul_proof.doc
860, 1,708, 1,459, 1,382 cm−1; 1H-NMR (CDCl3): δ 0.77 (s, 3H, H-28), 0.90 (s, 3H, H-25), 0.93 (s, 3H, H-27), 1.00 (s, 3H, H- 24), 1.04 (s, 3H, H-23), 1.22 (s, 3H, H-26), 1.66 (s, 3H, H-30), 1.84-1.97 (m [...] 866, 1,735, 1,451, 1,379, 1,243, 1,027 cm−1; 1H-NMR (CDCl3): δ 0.76 (dd, 1H, J = 10.8, 5.8 Hz, H-5), 0.81 (s, 3H, H-28), 0.82 (s, 9H, H-23, H-24, H-25), 0.91 (s, 3H, H- 27), 1.00 (s, 3H, H-26), 1.66 (s [...] (6; 5.1 mg); mp 285–287 °C (lit. mp 286 °C, Mitra and Misra, 1965).
Spectral data Lupeol (1); IR (CHCl3): υmax 3,345, 2,944, 2,862, 1,638, 1,453, 1,380, 1,043 cm−1; 1H- NMR (CDCl3): δ 0.66 (d, 1H, J = …