Synthesis of unprotected (.+-.)-tunichrome An-1, a tunicate blood pigment

BA Horenstein, K Nakanishi

Index: Horenstein, Benjamin A.; Nakanishi, Koji Journal of the American Chemical Society, 1989 ,  vol. 111,  # 16  p. 6242 - 6246

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Citation Number: 77

Abstract

Abstract: The unstable, oxygen-sensitive tunicate blood pigment (f)-tunichrome An-1 (la), which has been implicated in the 107-fold concentration of vanadium from the ocean in some tunicate species, has been synthesized in its underivatized form on a semipreparative scale; methods to isolate and purify the compound are also described. The synthesis employed tert-butyl carbamate (BOC) and tert-butyldimethylsilyl ethers (TBDMS) for N, O- ...