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Alternariol 9-O-methyl ether.

Dasari S, Bhadbhade M, Neilan BA - Acta Crystallogr Sect E Struct Rep Online (2012)

Bottom Line: 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⋯π and π-π contacts [with C⋯C short contacts between aromatic moieties of 3.324 (3), 3.296 (3) and 3.374 (3) Å].

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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⋯π and π-π contacts [with C⋯C short contacts between aromatic moieties of 3.324 (3), 3.296 (3) and 3.374 (3) Å].

No MeSH data available.


Related in: MedlinePlus

: Packing of molecules along b axis making C—H···π and π–π interactions. Symmetry codes: (iv) 1 - x, 1 - y, 1 - z; (v) 1 - x, -y, 1 - z.
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Fap3: : Packing of molecules along b axis making C—H···π and π–π interactions. Symmetry codes: (iv) 1 - x, 1 - y, 1 - z; (v) 1 - x, -y, 1 - z.


Alternariol 9-O-methyl ether.

Dasari S, Bhadbhade M, Neilan BA - Acta Crystallogr Sect E Struct Rep Online (2012)

: Packing of molecules along b axis making C—H···π and π–π interactions. Symmetry codes: (iv) 1 - x, 1 - y, 1 - z; (v) 1 - x, -y, 1 - z.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3344582&req=5

Fap3: : Packing of molecules along b axis making C—H···π and π–π interactions. Symmetry codes: (iv) 1 - x, 1 - y, 1 - z; (v) 1 - x, -y, 1 - z.
Bottom Line: 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⋯π and π-π contacts [with C⋯C short contacts between aromatic moieties of 3.324 (3), 3.296 (3) and 3.374 (3) Å].

View Article: PubMed Central - HTML - PubMed

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⋯π and π-π contacts [with C⋯C short contacts between aromatic moieties of 3.324 (3), 3.296 (3) and 3.374 (3) Å].

No MeSH data available.


Related in: MedlinePlus