8‐Isopropyl‐7,10‐dimethoxy‐3‐phenyl‐1‐oxa‐2,6,9‐triazaspiro[4.5]deca‐2,6,9‐triene

The title compound, C 17 H 21 N 3 O 3 , is an intermediate in an asymmetric synthesis of amino acids. It has an essentially planar central bis-lactim ether ring, with both methoxy groups lying in the plane of the heterocycle. The isopropyl group adopts the same conformation as found in similar structures. The phenyl substituent is nearly coplanar with the isoxazoline ring.