Unknown

Dataset Information

0

12-Acetyl-6-hy-droxy-3,3,9,9-tetra-methyl-furo[3,4-b]pyrano[3,2-h]xanthene-7,11(3H,9H)-dione.

ABSTRACT: The title compound, Artonol B, C(24)H(20)O(7), isolated from the stem bark of Artocarpus kemando, consists of four six-membered rings and one five-membered ring. The tricyclic xanthone ring system is almost planar [maximum deviation 0.115?(5)?Å], whereas the pyran-oid ring is in a distorted boat conformation·The furan ring is almost coplanar with the fused aromatic ring, making a dihedral angle of 3.76?(9)°. The phenol ring serves as a intra-molecular hydrogen-bond donor to the adjacent carbonyl group and also acts as an inter-molecular hydrogen-bond acceptor for the methyl groups of adjacent mol-ecules, forming a three-dimensional network in the crystal.

SUBMITTER: Ee GC 

PROVIDER: S-EPMC3011782 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

12-Acetyl-6-hy-droxy-3,3,9,9-tetra-methyl-furo[3,4-b]pyrano[3,2-h]xanthene-7,11(3H,9H)-dione.

Ee Gwendoline Cheng Lian GC   Teo Siow Hwa SH   Kwong Huey Chong HC   Mohamed Tahir Mohamed Ibrahim MI   Silong Sidik S  

Acta crystallographica. Section E, Structure reports online 20101127 Pt 12

The title compound, Artonol B, C(24)H(20)O(7), isolated from the stem bark of Artocarpus kemando, consists of four six-membered rings and one five-membered ring. The tricyclic xanthone ring system is almost planar [maximum deviation 0.115 (5) Å], whereas the pyran-oid ring is in a distorted boat conformation·The furan ring is almost coplanar with the fused aromatic ring, making a dihedral angle of 3.76 (9)°. The phenol ring serves as a intra-molecular hydrogen-bond donor to the adjacent carbonyl  ...[more]

Similar Datasets

Unknown 9-(3,4-Dimeth-oxy-phen-yl)-3,3,6,6-tetra-methyl-4,5,6,9-tetra-hydro-3H-xanthene-1,8(2H,7H)-dione.
| S-EPMC3152024 | biostudies-literature
Unknown (8aRS)-8,8a-Dihydro-furo[3,2-f]indolizine-6,9(4H,7H)-dione.
| S-EPMC3213484 | biostudies-literature
Unknown 5,6-Dimethyl-1,2,9,10-tetra-hydro-pyrano[3,2-f]chromene-3,8-dione.
| S-EPMC3394011 | biostudies-literature
Unknown 3,3,6,6-Tetra-methyl-9-phenyl-3,4,5,6-tetra-hydro-9H-xanthene-1,8(2H,7H)-dione.
| S-EPMC2969019 | biostudies-literature
Unknown 7-Methyl-9-p-tolyl-4,9-dihydro-furo[3,4-b]quinolin-1(3H)-one.
| S-EPMC2968025 | biostudies-literature
Unknown 3-Isopropyl-2-(4-methoxy-phen-oxy)-1-benzo-furo[3,2-d]pyrimidin-4(3H)-one.
| S-EPMC2971295 | biostudies-literature
Unknown 3,3,6,6-Tetra-methyl-9-(2-nitro-phen-yl)-3,4,6,7-tetra-hydro-2H-xanthene-1,8(5H,9H)-dione.
| S-EPMC3007304 | biostudies-literature
Unknown 9-(2,4-Dichloro-phen-yl)-3,3,6,6-tetra-methyl-3,4,5,6-tetra-hydro-9H-xanthene-1,8(2H,7H)-dione.
| S-EPMC3011743 | biostudies-literature
Unknown 9-(4-Methoxy-phen-yl)-3,3,6,6-tetra-methyl-3,4,6,7-tetra-hydro-2H-xanthene-1,8(5H,9H)-dione.
| S-EPMC2960936 | biostudies-literature
Unknown Methyl 9H-xanthene-9-carboxyl-ate.
| S-EPMC2961166 | biostudies-literature