1. Trifluoroacetylation of alcohols: a newly detected reaction of CF3CO3H
2. Total synthesis of pseudoguaianolides V Stereocontrolled approaches to the fastigilins: (±)-2, 3-Dihydrofastigilin C
3. Stabilität von schutzgruppen für nucleoside und nucleotide
4. Selected data of compound 1 (oil): HRMS: Calcd for C25H27F3O6S: 512.1463; Found: 512.1472.1H NMR (300MHz, C6D6): δ 7.40 (2H, d,J= 8.0Hz), 7.00 (2H, t,J= 8.0Hz), 6.90 (1H, t,J= 8.0Hz), 6.28 (1H, dJ= 5.9Hz), 5.90 (1H, d, J = 5.9Hz), 4.70 (1H, s), 4.40-4.50 (1H, m), 4.10 (2H, dd, J = 12Hz), 3.90 (1H, m), 3.70 (3H, s), 2.55 (1H, m), 2.10 (1H, m), 1.60 (4H, m), 1.40 (3H,s), 1.10 (2H, m). IR (film): 2980, 1786, 1412, 1261, 798 cm−1. MS(m/z): 512 (M+, 40), 497(10), 403(25), 327(35), 342(10), 101(100).[α]020= -25.3°(c 0.13, acetone).