[Digestive absorption of calcium phosphates in man]. / Absorption digestive de phosphates de calcium chez l'homme.

Closely similar to the mineral composition of bone, di- and tricalcium phosphates would seem of interest as oral calcium supplement; unfortunately, they are commonly regarded as non-absorbable because of their insolubility. Seven elderly patients received a constant regimen of 1500 mg of calcium a day, supplied either by diet alone, or by a hypocalcemic diet (Ca = 500 mg) supplemented with di- or tricalcium phosphate (Ca = 1000 mg). Calcium balance remained positive under the calcium phosphate treatment. Inexpensive, stable and well-accepted by patients, these salts, especially tricalcium phosphate, deserve to be evaluated in view of their use for therapy and mass prevention of senile osteoporosis.

[Furocoumarins in Archangelica officinalis and Angelica silvestris. Distribution of 5-beta-cyclolavandulyloxy-psoralen in the genus Angelica.]. / Contribution à l'Etude des Furocoumarines du Genre Angelica. Distribution du ß-Cyclolavandulyloxy-S Psoralène.

5-beta-Cyclolavandulyloxy-psoralen i.e. 4-[(2,4,4-trimetnyl-1-cyclohexen-1-yl)methoxy]-7H-furo [3,2-g] [1] benzopyran-7-one was isolated from Angelica silvestris L. Detailed analytical data are given. Presence of this coumarin in other Angelica species is reported and discussed.