US 5,292,900 A · O-substituted N-hydroxyurea derivatives

Abstract

The present invention provides compounds useful as intermediates for the preparation of 5-lipoxygenase inhibiting compounds. The intermediates of this invention have the structure ##STR1## wherein R.sup.1 is an O-protecting group selected from the group consisting of ##STR2## In the above, X is oxygen or sulfur.

Claims1

Dependent claims

The compound having the name O-(tetrahydropyran-2-yl)-N-hydroxyurea.

Dependencies are inferred from the claim text.

Facts

Application

07/992,389Filed 18 Dec 1992

Granted

8 Mar 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

C07D 333/58
With only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring: radicals…
C07C 275/64
Derivatives of urea, i.e. compounds containing any of the groups [IMAGE cpc-sch-C07C-0967.gif], the nitrogen atoms not being part of nitro or…:…
C07D 309/12
Oxygen atoms: only hydrogen atoms and one oxygen atom directly attached to ring carbon atoms, e.g. tetrahydropyranyl ethers
Y02P 20/55
Improvements relating to the production of bulk chemicals: design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

O-substituted N-hydroxyurea derivatives

Life of this patent

Abstract

Claims1

O-substituted N-hydroxyurea derivatives

Life of this patent

Abstract

Claims1