| 摘要 |
<p>The invention provides a process for preparing optically active pyranone derivatives of formula (I) or (II) [Chemical formula should be inserted here. Please see paper copy] or [Chemical formula should be inserted here. Please see paper copy]in which R1 is as defined in the specification; intermediates used in the process; and use of the optically active pyranone derivatives in the preparation of pharmaceutically-useful compounds.</p> |
