... 1800 Journal of Natural Products, 2010, Vol. 73, No. 11 SemenoV et al. Page 6. 2 h) in 1.5-2 mL of dry CH2Cl2. ... The resulting product was deacetylated by treating the crystals with a mixture of Et3N (0.5 mL), H2O (0.5 mL), and MeOH (2 mL) for 24 h at rt. ...