Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The synthesis of two marine 9,10-secosteroids, calicoferol E and astrogorgiadiol, has been achieved starting from vitamin D 3 . The conceived approach establishes a general convergent strategy toward the synthesis of 9,10-secosteroids. ... Cookies are used by this site. To decline or ...