university of kwazulu-natal faculty of science and agriculture school ...

GC-MS (70eV, direct inlet), relative intensity %: m/z 426 (8.56) [M - COOH - OH] + , m/z
218 (100)
1 H NMR and 13 C NMR data (CD3OD, 600MHz): Refer to table 22 on page 124
Compound V:
Chemical name: 5,22-Stigmastadien-3β-ol
Common name: Stigmasterol
Molecular formula: C29H42O
Physical description: white residue
Melting point: 168 o C (165 o C, Jamal et al., 2009)
Optical rotation: [ ] 20
α D -40.8° (c 0.12g/100ml, CDCl3)
Infrared spectrum ν KBr
max cm-1 : 3305 cm -1 (O-H stretching bands), 2932 cm -1 (C-H
stretching vibrations), 1641 cm -1 (alkene stretching bands)
1 H NMR and 13 C NMR data: Refer to table 25 on page 130
Compound VI:
Chemical name: lup-20(29)-en-3β-ol
Common name: Lupeol
Molecular formula: C30H50O
Physical description: white residue/powder
Melting point: 214 o C (213 o C, Fotie et al., 2006; 214-215 o C, Saeed et al., 2003)
Optical rotation: [ ] 20
α D +25.3° (c 1.2g/100ml, DCM) (lit. value = +25.7° (c 0.70, CHCl3),
Fotie et al., 2006)
Infrared spectrum ν KBr
max cm-1 : 3332 cm -1 (O-H stretching bands), 2941 cm -1 (C-H
stretching vibrations), 1637 cm -1 (alkene stretching bands)
1 H NMR and 13 C NMR data: Refer to table 26 on pages 131
135