2-(1-naphthyl)ethyl vinyl ether undergoes intramolecular 1,2- photocycloaddition whereas the 2-naphthyl isomer yields a product reflecting dimerisation and loss of the elements of acetylene: consistent with such diverse photochemistry, the addition of 2,3-dihydropyran to naphthalene produces only the 1,2-, 1′,2′regioisomer.
7-(2-amino-1-hydroxy-ethyl)-4-hydroxybenzothiazol-2(3H)-one-derivatives as beta2 adrenoreceptor agonists
申请人:Bailey Andrew
公开号:US20090221653A1
公开(公告)日:2009-09-03
The present invention provides compounds of formula (I) wherein the variables are as defined in the specification, processes for their preparation, pharmaceutical compositions containing them and their use in therapy.