... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 31, Issue 2, 1990, Pages 225–226. Cover image Cover image. ... 2); H. Kayakiri, S. Takase, T. Shibata, M. Okamoto, H. Terano, H. Hashimoto, T. Tada, S. Koda; J. Org. ...