Abstract: Catalytic cracking catalysts/additives which comprise rare-earth, preferably lanthanum, oxide and/or oxychloride dispersed in an acid reacted metakaolin matrix. The catalysts/additives may be combined with zeolite-containing cracking catalysts to enhance catalytic activity/selectivity in the presence of metals (Ni and V).

Abstract: Catalytic cracking catalysts/additives which comprise rare-earth, preferably lanthanum, oxide and/or oxychloride dispersed in an acid reacted metakaolin matrix. The catalysts/additives may be combined with zeolite-containing cracking catalysts to enhance catalytic activity/selectivity in the presence of metals (Ni and V).

Abstract: The novel compound 6-deoxyacyclovir, which itself has antiviral activity against herpes viruses, is converted enzymatically to acyclovir by xanthine oxidase/dehydrogenase or aldehyde oxygenase.

Abstract: 9-Hydroxyethoxymethyl (and related) derivatives of certain 6-, and 2,6-substituted purines have been discovered to have potent anti-viral activities. Novel compounds and their pharmaceutically acceptable salts, pharmaceutical formulations containing the compounds of this invention, and the treatment of viral infections with these formulations are all disclosed. 9-(2-hydroxyethoxymethyl) guanine and 2-amino-9-(2-hydroxyethoxymethyl)adenine are examples of especially active compounds of this invention.

Abstract: Novel 2-amino substituted adenine compounds and their use as antiviral compounds are disclosed. In particular the compound 2-amino-9-(2-hydroxyethoxymethyl) adenine is particularly advantageous as an antiviral in that it has high oral absorption and that upon metabolism in mammals, it has the property of being converted to 9-(2-hydroxyethoxymethyl) guanine which is also a highly active antiviral.

Abstract: Pharmaceutical preparations containing compounds of the formula ##STR1## where R is alkyl of 1 to 11 carbons. The preparations are useful in inhibiting adenosine deaminase in mammals thereby providing a method for prolonging the effectiveness of pharamaceutical agents which are biologically degraded by adenosine deaminase and thus converted into other compounds.

Abstract: 9-Hydroxyethoxymethyl (and related) derivatives of certain 6-, and 2,6-substituted purines have been discovered to have potent anti-viral activities. Novel compounds and their pharmaceutically acceptable salts, pharmaceutical formulations containing the compounds of this invention, and the treatment of viral infections with these formulations are all disclosed. 9-(2-hydroxyethoxymethyl) guanine and 2-amino-9-(2-hydroxyethoxymethyl)adenine are examples of especially active compounds of this invention.

Abstract: 9-(2-Hydroxyethoxymethyl) (and related) derivatives of certain 6-, and 2,6-substituted purines have been discovered to have potent anti-viral activities. Novel compounds and their pharamceutically acceptable salts, pharmaceutical formulations containing the compounds of this invention, and the treatment of viral infections with these formulations are all disclosed. 9-(2-Hydroxyethoxymethyl)guanine and 2-amino-9-(2-hydroxyethoxymethyl) adenine are examples of especially active compounds of this invention. Also preferred because of its high oral absorption is the phosphate and especially the monophosphate of 9-(2-hydroxyethoxymethyl)guanine as well as pharmaceutically acceptable salts thereof.

Abstract: 9-Hydroxyethoxymethyl (and related) derivatives of certain 6-, and 2,6-substituted purines have been discovered to have potent anti-viral activities. Novel compounds and their pharmaceutically acceptable salts, pharmaceutical formulation containing the compounds of this invention, and the treatment of viral infections with these formulations are all disclosed. 9-(2-hydroxyethoxymethyl) guanine and 2-amino-9-(2-hydroxyethoxymethyl)adenine are examples of especially active compounds of this invention.

Abstract: Method of preparing 9-(2-hydroxyethoxymethyl)guanine which comprises preparing the compound ##STR1## wherein R and R.sup.1 are hydrogen, lower alkyl and phenyl and then hydrolyzing same. 9-(2-hydroxyethoxymethyl)guanine is useful as an antiviral.