6.ergosterol
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Ergosterol is a C28 sterol that is the most common mycosterol. It is the precursor to vitamin D2 and exposure to UV light converts ergosterol to ergocalciferol. Ergosterol contains a conjugated diene system that reacts with maleic anhydride in Diel's alder reaction to form an adduct. Partial reduction of ergosterol with sodium ethanol yields the dihydro derivative. Ergosterol can also be degraded through oxidation reactions.
6.ergosterol
- 1. Ergosterol Prepared by Dr. N.GOPINATHAN ASSISTANT PROFESSOR DEPARTMENT OF PHARMACEUTICAL CHEMISTRY FACULTY OF PHARMACY SRI RAMACHANDRA UNIVERSITY CHENNAI-116 TAMILNADU
- 3. C 28 sterol It is commonest mycosterol. It is precursor for Vit-D2 The exposure of ergosterol to UV gives ergocalciferol. It provides route to progesterone and adrenocortical harmone.
- 4. Conjugated diene system It undergoes Diels alder reaction with maleic anhydride to give adduct.
- 5. Reduction partial-with sodium ethanol gives dihydro derivative CH3 CH3 CH3CH3 CH3 CH3 OH CH3 CH3 CH3CH3 CH3 CH3 OH
- 7. Thank you