Abstract
A new pyridinium derivative, polyaxibetaine (3), has been isolated from the marine sponge Axinella polypoides, together with two known modified amino acids, 1 and 2. The planar structure of compound 3 has been elucidated by spectroscopic methods; definition of the absolute configuration of compounds 1-3 has been carried out through ECD studies.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Amino Acids / chemistry
-
Amino Acids / isolation & purification
-
Animals
-
Axinella / chemistry*
-
Marine Biology
-
Molecular Structure
-
Nuclear Magnetic Resonance, Biomolecular
-
Pyridinium Compounds / chemistry
-
Pyridinium Compounds / isolation & purification*
Substances
-
Amino Acids
-
Pyridinium Compounds
-
axiphenylalaninium
-
axityrosinium
-
polyaxibetaine