60 f254 neutral type e

Melting points were determined in open capillary tubes on a Boetius melting point apparatus and are uncorrected. The ¹H NMR, COSY, ROESY, HSQC, HMBC spectra were recorded on an Ascend^TM 600 spectrometers at 600 MHz in deuteriochloroform with tetramethylsilane as the internal standard. The ¹³C NMR spectrum was recorded at 75 MHz. Electron impact mass spectra (EI MS), fast atom bombardment mass spectra (FAB MS, in glycerol), chemical ionisation (CI MS) were run on a Finnigan MAT 95 spectrometer at 70 eV and HR MS was run on a Brucker Impact II. The thin layer chromatography was performed on silica gel 60 F₂₅₄ (Merck 1.05735) with CHCl₃-EtOH (10:1 v/v) and on aluminium oxide 60 F₂₅₄ neutral (type E) (Merck 1.05581) with CHCl₃-EtOH (10:1 v/v) as eluents.

Melting points were determined in open capillary tubes on a Boetius melting point apparatus and are uncorrected. The ¹H NMR, COSY, NOE HSQC, HMBC spectra were recorded on a Bruker Fourier 300 and Bruker DRX spectrometers at 300 and 600 MHz in deuteriochloroform with tetramethylsilane as the internal standard. The ¹³C NMR spectrum was recorded at 75 MHz. Electron Impact mass spectra (EI MS) and Fast Atom Bombardment mass spectra (FAB MS, in glycerol) were run on a Finnigan MAT 95 spectrometer at 70 eV. The thin layer chromatography were performed on silica gel 60 F₂₅₄ (Merck 1.05735) with CHCl₃-EtOH (5:1 and 10:1 v/v) and on aluminum oxide 60 F₂₅₄ neutral (type E) (Merck 1.05581) with CHCl₃-EtOH (10:1 v/v) as eluents.