Abstract: The prevention and therapy of pulmonary embolism with pharmaceutical compositions containing low molecular weight dermatan sulfate is described. These pharmaceutical compositions are administered by subcutaneous, intramuscular or intravenous route at a daily dosage between 200 and 3000 mgs of active principle. The low molecular weight dermatan sulfate preferred in carrying out the invention has an average molecular weight equal to 5500.+-.1100 Daltons and is obtained by depolymerization of the dermatan sulfate of natural origin in the presence of hydrogen peroxide and cupric ions.

Abstract: The present invention refers to compounds having a benzopyranic structure of general formula I ##STR1## wherein R represents a hydrogen atom or an acyl group, useful as intermediates in the synthesis of vitamin E and of other compounds having benzopyranic structure endowed with properties inhibiting the formation of organic peroxides and therefore having antioxidizing activity, and to the process for their preparation.

Abstract: Lactones of formula ##STR1## and their pharmacologically acceptable salts endowed with antioxiding and hypolipidaemic properties and that show the capability to prevent and/or to delay the oxidative modification of the lipoproteins by competing with the chain of propagation of the lipidic peroxidation by means of an effective scavenging of the peroxylic radicals. The compounds object of the present invention are useful in the treatment of the atherosclerosis and of many correlated vascular pathologies, like ischaemic cardiopathies (angina pectoris and myocardial infarction), cerebral thrombosis and peripheral arteriopathies, because the high plasma levels of lipids and the oxidative modifications of the low density lipoproteins (LDL) represent crucial events in the pathogenesis of the atherosclerosis.

Abstract: This invention refers to heterocyclic compounds of general formula ##STR1## and their pharmacologically accepted salts. The derivatives described in this invention are active in the gastro-intestinal apparatus; in particular, they have prokinetic effects, in other words they create specific stimulation on gastro-intestinal motility, facilitating the passage of the contents of the alimentary tract, and possess anti-emetic qualities, without side effects involving the central nervous system.