You-an Ma, C. Sih
Dec 24, 1999
Citations
0
Influential Citations
4
Citations
Journal
Tetrahedron Letters
Abstract
Both enzymatic and non-enzymatic oxidative coupling of 3,5-diiodo-l-tyrosine derivatives afforded a T4 derivative and a C3 fragment. The C3 fragment is not dehydroalanine as was claimed by previous workers but rather it was identified as aminomalonic semialdehyde, which decomposed to hydroxypyruvate, 3, in the acidic work-up. The latter was isolated as its osazone derivative, 6.