6β,8β-Dihydroxyeremophil-7(11)-en-8α,12-olide
نویسندگان
چکیده
منابع مشابه
6β,8β-Dihydroxyeremophil-7(11)-en-8α,12-olide
The title compound, C(15)H(22)O(4), an eremophilane sesquiternoid, was isolated from the roots of Ligularia virgaurea. Both six-membered rings (A and B) adopt chair conformations and the five-membered ring is almost planar (r.m.s. deviation = 0.016 Å). The two methyl and two hy-droxy groups adopt a syn conformation and the A/B ring junction is cis-fused. An intra-molecular O-H⋯O hydrogen bond g...
متن کامل6β-Hydroxyeremophil-7(11)-en-8β,12-olide
The title eremophilenolide, C(15)H(22)O(3), is a natural compound isolated from Senecio laetus Edgew. The two cis-fused six-membered rings have chair confomations and the five-membered ring has a planar envelope conformation [maximum deviation = 0.010 (1) Å]. The β-hy-droxy group participates in inter-molecular O-H⋯O hydrogen bonding, forming mol-ecular chains along the a axis.
متن کاملCrystal structure of 4α-hydroxy-5α,8β(H)-eudesm-7(11)-en-8,12-olide monohydrate
The title compound, C15H22O3·H2O, is a natural producr isolated from Chloranthus japonicus, which is a eudesmane sesquiterpenoid. The two trans-fused six-membered rings have chair confomations. In the crystal, O-H⋯O hydrogen bonds link the components into corrugated layers parallel to the bc plane. There are C-H⋯O inter-actions present within and between the layers.
متن کامل3β-Acetoxy-8β,10β-dihydroxy-6β-methoxyeremophil-7(11)-en-8,12-olide
The title compound, C(18)H(26)O(7), is an eremophilenolide which has been isolated from the plant Ligularia duciformis for the first time. The present study confirms the atomic connectivity assigned on the basis of (1)H and (13)C NMR spectroscopy. The mol-ecule contains three fused rings, two six-membered rings in chair confomations and a five-membered ring in a flattened envelope conformation....
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This document specifies the Real-Time Transport Protocol (RTP) payload format for ITU-T Recommendation G.711.0. ITU-T Rec. G.711.0 defines a lossless and stateless compression for G.711 packet payloads typically used in IP networks. This document also defines a storage mode format for G.711.0 and a media type registration for the G.711.0 RTP payload format.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2011
ISSN: 1600-5368
DOI: 10.1107/s160053681104150x