Central Chirality, Axial Chirality, and Conformational Dynamics of Lignans
Once the two-dimensional connectivity of lignans is established, their three-dimensional structures can still differ substantially as a result of tetrahedral stereocenters, restricted biaryl rotation, and changes in ring conformation. Whether a tetrahedral carbon constitutes a stereocenter ...
危险品化学品经营许可证（带存储）