| 摘要 |
<p>The 19-cyano-20-nor derivatives of prostaglandins E1 and E2, and certain esters thereof, are bronchodilatory agents, useful in the treatment of bronchial asthma, bronchitis, pneumonia and emphysema. The 19-cyano-20-nor derivatives of prostaglandins E1 and E2, and certain esters thereof, which also have protecting groups on the hydroxy groups at C-11 and C-15 are useful intermediates for the preparations of the bronchodilatory agents of this invention.</p> |
