Studies in the Activation in Sterols

Abstract

The melting points, percentage yields, and analytical results for the eleven new hydantoins prepared have been collected in Table III. Summary 1.sym-Di-allyloxypropanol and three representatives of the sym-alkoxypropanol series have been prepared, one of which, the sym-di-n-heptyloxypropanol, has not been previously reported in the literature.2. Three new members of the sym-dialkoxypropanone type of compounds have been prepared, and, in addition, the sym-diallyloxypro-panone has been synthesized-not, however, in an analytically pure state.3. Two new members of the «wvywz-dialkoxypropanol series have been synthesized and adequately characterized.4. Attempts to obtain pure unsym-dialkoxypropanones resulted in failure.5. Utilizing the series of ten sym-dialkoxypropanones and sym-diallyloxypropanone, Bucherer's method has been extended by the synthesis of eleven hydantoins of a new type. Austin, Texas

The Physiological Effects of Radiant Energy

“…There is a similarity between the activation curve of 7-dehydrocholesterol and of rat skin whereas the activation of er gosterol is dissimilar. In all probability 7-dehydrocholesterol is the significant pro-vitamin D of the skin (12).…”