Abstract:
Steroids of the 5 Alpha -pregnane series possessing a 3 Alpha hydroxy group, a 10-hydrogen atom or methyl group, an 11-oxo group, a 17 Alpha -hydrogen atom, a 20-oxo group, and a group of the formula -XR at the 21-position wherein -XR represents -OCOR, -OCOOR, -CCOSR or -OCONHR and R represents (a) a solubilising group containing a basic nitrogen atom, (b) a nitrobenzyl group (c) a lower alkyl group (when X is not -OCO-) or (d) a halogenoalkyl group. The steroids possess anaesthetic properties.
Abstract:
The invention provides 3 Alpha -oxygenated pregnane 21-ethers possessing a hydroxy group in the 3 Alpha -position; a hydrogen atom or a methyl group at the 10-position; a hydrogen atom in the 17 Alpha -position; a keto group in the 20-position; and an etherified hydroxyl group in the 21-position.
Abstract:
This invention relates to steroids of the pregnane and 19norpregnane series having anaesthetic properties and compositions containing them. More particularly the present invention relates to such steroids having a variety of substituents in the 2 Beta position, a 3 Alpha -hydroxy group and a 5 Alpha -hydrogen atom and esters and 20-ketals thereof. At the 11-position of such steriods is preferably either two hydrogen atoms or an oxo group. The compounds according to the invention may conveniently be prepared by reaction of an appropriate 2 Alpha ,3 Alpha -epoxypregnane or 19-norpregnane with a reagent which introduces the desired 2 Beta -substituent and various modifications of the compound produced are described to produce compounds within the scope of the invention. The present invention provides compositions containing certain steroids of the pregnane and 19norpregnane series and such compositions generally may be administered intravenously to induce anaesthesia, the invention providing methods of inducing anaesthesia.
Abstract:
This invention relates to steroids of the pregnane and 19-norpregnane series having anaesthetic properties and compositions containing them. More particularly the present invention relates to such steroids having a variety of substituents in the 2 beta -position, a 3 alpha -hydroxy group and a 5 alpha -hydrogen atom and esters and 20-ketals thereof. At the 11-position of such steriods is preferably either two hydrogen atoms or an oxo group. The compounds according to the invention may conveniently be prepared by reaction of an appropriate 2 alpha ,3 alpha -epoxy-pregnane or 19-norpregnane with a reagent which introduces the desired 2 beta -substituent and various modifications of the compound produced are described to produce compounds within the scope of the invention. The present invention provides compositions containing certain steroids of the pregnane and 19-norpregnane series and such compositions generally may be administered intravenously to induce anaesthesia, the invention providing methods of inducing anaesthesia.
Abstract:
2-Vinylclavem compounds are disclosed which have been found of value in the synthesis of thio-derivatives of clavulanic acid which possess antibiotic and beta -lactamase inhibitory activity. Methods for preparing the vinylclavem compounds are disclosed and processes for preparing the thio-derivatives are given.