Christian Lehmann
When treated with anisaldehyde dimethylacetal the O-benzyl ester protected dipeptide Fmoc-NMeIle-Thr-OBzl (2, cf. Scheme 3), cyclizes to the 2-C(S) epimer 3b assigned by NMR spectroscopy to chirality (R) at the 2-C position of the resulting substituted 1,3 ...
1999