Photocure Asa

Photocure as

Ceramatec, Inc.

Alf Bjorseth

Johan E Moan

Qian Peng

Trond Warloe

Harald Steen

Karl E Gierskcky

Ashok V Joshi

Jo Klaveness

Aslak Godal

Meilin Liu

Nils Olav Nilsen

Jon Erik Braenden

Lars Renberg

Johan Moan

Karl Erik Gierskcky

The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) R22N&#x2014;CH2COCH2-CH2CO&#x2014;OR1 (wherein R1 may represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and R2 represents a hydrogen atom or a group R1, and both R2 groups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.

Esters of 5-aminolevulinic acid as photosensitizing agents in photochemotherapy

The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) RN&#x2014;CHCOCH&#x2014;CHCO&#x2014;OR(wherein Rmay represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and Rrepresents a hydrogen atom or a group R, and both Rgroups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.

Esters of 5-aminolevulinic acid and their use as photosensitizing compounds in photochemotherapy

The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) R22N&#x2014;CH2COCH2&#x2014;CH2CO&#x2014;OR1 (wherein R1 may represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and R2 represents a hydrogen atom or a group R1, and both R2 groups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.

The present invention provides a compound of formula I;RN&#x2014;CHCOCH&#x2014;CHCO&#x2014;OR&#x2003;&#x2003;(I)wherein Rrepresents (a) an optionally substituted branched Calkyl group, comprising a straight chain Calkyl group, branched by substitution with one or more Calkyl groups, wherein said site of substitution is at C2 or a higher C atom, (b) a non-heteroaromatic aryl substituted alkyl group, wherein said aryl group is substituted, or (c) an alkoxy substituted alkyl group, wherein said alkoxy group is substituted by a methoxy group or an alkoxy group substituted with an alkoxy group, wherein in (a) and (b) said substituents are selected from hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, nitro, oxo or fluoro groups, and said alkyl group is optionally interrupted or terminated by one or more &#x2014;O&#x2014;, NR&#x2014;, &#x2014;S&#x2014; or PR&#x2014; groups; R, each of which may be the same or different, represents a hydrogen atom or a group R, wherein Rrepresents (a) an optionally substituted branched Calkyl group, comprising a straight chain Calkyl group, branched by substitution with one or more Calkyl groups, wherein said site of substitution is at C2 or a higher C atom, (b) a non-heteroaromatic aryl substituted alkyl group, wherein said aryl group is substituted, or (c) an alkoxy substituted alkyl group, wherein said alkoxy group is substituted by a methoxy group or an alkoxy group substituted with an alkoxy group, wherein in (a) and (b) said substituents are selected from hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, nitro, oxo or fluoro groups, and said alkyl group is optionally interrupted or terminated by one or more &#x2014;O&#x2014;, NR&#x2014;, &#x2014;S&#x2014; or PR&#x2014; groups; and Rrepresents a hydrogen or Calkyl group, and salts thereof for use in photochemotherapy or diagnosis. Pharmaceutical compositions comprising said compound, methods of diagnosis or photochemotherapy using said compound and related compounds and compositions, and products and kits comprising said compounds are also provided.

The present invention relates to compounds being esters of 5-aminolevulinic acids or pharmaceutically acceptable salts thereof, including compounds of formula (I) R N&mdash;CH COCH &mdash;CH CO&mdash;OR (wherein R may represent alkyl optionally substituted by hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, oxo or fluoro groups and optionally interrupted by oxygen, nitrogen, sulphur or phosphorus atoms; and R represents a hydrogen atom or a group R , and both R groups may be the identical or different), and their use in diagnosis and photochemotherapy of disorders or abnormalities of external or internal surfaces of the body, and products and kits for performing the invention.

Esters of 5-aminolevulinic acid as photosensitizing agents in

A electrolytic cell for efficiently producing caustic from sodium salts via use of a thin membrane of ceramic or ceramic composite electrolyte is disclosed. Ceramic electrolytes having a very mobile sodium ion such as NASICON are very effective in cells producing concentrated caustic from sodium salts of strong acids.

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Oslo, Norway

Alf Bjorseth