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Alternariol 9-O-methyl ether.


ABSTRACT: The title compound (AME; systematic name: 3,7-dihy-droxy-9-meth-oxy-1-methyl-6H-benzo[c]chromen-6-one), C(15)H(12)O(5), was isolated from an endophytic fungi Alternaria sp., from Catharanthus roseus (common name: Madagascar periwinkle). There is an intramolecular O-H?O hydrogen bond in the essentially planar mol-ecule (r.m.s. deviation 0.02?Å). In the crystal, the molecule forms an O-H?O hydrogen bond with its centrosymmetric counterpart with four bridging inter-actions (two O-H?O and two C-H?O). The almost planar sheets of the dimeric units thus formed are stacked along b axis via C-H?? and ?-? contacts [with C?C short contacts between aromatic moieties of 3.324?(3), 3.296?(3) and 3.374?(3)?Å].

SUBMITTER: Dasari S 

PROVIDER: S-EPMC3344582 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature

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Alternariol 9-O-methyl ether.

Dasari Sreekanth S   Bhadbhade Mohan M   Neilan Brett A BA  

Acta crystallographica. Section E, Structure reports online 20120421 Pt 5


The title compound (AME; systematic name: 3,7-dihy-droxy-9-meth-oxy-1-methyl-6H-benzo[c]chromen-6-one), C(15)H(12)O(5), was isolated from an endophytic fungi Alternaria sp., from Catharanthus roseus (common name: Madagascar periwinkle). There is an intramolecular O-H⋯O hydrogen bond in the essentially planar mol-ecule (r.m.s. deviation 0.02 Å). In the crystal, the molecule forms an O-H⋯O hydrogen bond with its centrosymmetric counterpart with four bridging inter-actions (two O-H⋯O and two C-H⋯O)  ...[more]

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