Abstract: The present invention relates to a use of D-chiro-inositol, pinitol, or analog compounds thereof for preventing or treating female menopausal symptoms. The active ingredient compound of the present invention has an effect of increasing the activity of female hormones by increasing the blood concentration of 17?-estradiol and lowering the blood concentration of sex hormone-binding globulin. Therefore, the active ingredient compound of the present invention can be developed as a drug or a nutraceutical for preventing, alleviating or treating female menopausal symptoms. The active ingredient of the present invention is derived from a natural product, and thus, unlike an agonist of female sex hormones or chemically synthesized sex hormones, has very few side effects when applied to the human body.

Abstract: The present invention relates to a method for preparing D-chiro-inositol from myo-inositol by using a transformed host cell which expresses enzymes such as a myo-inositol transporter, inositol dehydrogenase, and inosose isomerase. According to the method of the present invention, myo-inositol can be converted into D-chiro-inositol at a high yield.

Abstract: The present invention relates to a method for preparing D-chiro-inositol from myo-inositol by using a transformed host cell which expresses enzymes such as a myo-inositol transporter, inositol dehydrogenase, and inosose isomerase. According to the method of the present invention, myo-inositol can be converted into D-chiro-inositol at a high yield.