Polyhydro-2-phenanthrylideneacetic acids and esters thereof
申请人:Sterling Drug Inc.
公开号:US03932482A1
公开(公告)日:1976-01-13
Alkyl polyhydro-2-phenanthrylideneacetates are prepared by interacting the corresponding 2-oxopolyhydrophenanthrenes with a tri-lower-alkyl .alpha.-phosphono-lower-alkanoate. Said alkyl polyhydro-2-phenanthrylideneacetates are hydrolyzed to the free acid, and then reesterified via the acid chloride with a tertiary-amino-lower-alkanol to give basic esters having cardiotonic activity.