| 摘要 |
NEW MATERIAL:1alpha-Hydroxy-26,27-dimethyl-vitamin D3 of formula. USE:A remedy for calcium dysbolism and osteoporosis. It has strong vitamin D activity and low toxicity. PREPARATION:The compound of formula can be produced by converting 1alpha,3beta- diacetoxychol-5-en-24-ol to 26,27-dimethylcholesta-5,7-diene-1alpha,3beta-diol via 3 reac tion steps, irradiating the compound with ultraviolet radiation and heating the product.
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