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Trichodermin (4β-acet-oxy-12,13-epoxy-trichothec-9-ene).

ABSTRACT: In the title natural product, C(17)H(24)O(4), which is a very potent inhibitor of protein synthesis in mammalian cells, the five-membered ring displays an envelope conformation, whereas the two six-membered rings show different conformations, viz. chair and half-chair.

SUBMITTER: Chen SY

PROVIDER: S-EPMC2960951 | biostudies-literature | 2008 Mar

REPOSITORIES: biostudies-literature

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Trichodermin (4β-acet-oxy-12,13-epoxy-trichothec-9-ene).

Chen Shao-Yuan SY Zhang Chu-Long CL Chen Yu-Zhe YZ Lin Fu-Cheng FC

Acta crystallographica. Section E, Structure reports online 20080312 Pt 4

In the title natural product, C(17)H(24)O(4), which is a very potent inhibitor of protein synthesis in mammalian cells, the five-membered ring displays an envelope conformation, whereas the two six-membered rings show different conformations, viz. chair and half-chair. ...[more]

PMID: 21202093

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Dihalogenated trichodermin (4β-acet-oxy-9,10-dibromo-12,13-epoxy-tri-chothec).

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Trichodermin (12,13-ep-oxy-trichethec-9-en-4β-yl 4-fluoro-benzoate).

Project description:IN THE TITLE TRICHODERMIN COMPOUND (SYSTEMATIC NAME: 12,13-ep-oxy-trichothec-9-en-4β-yl 4-fluoro-benzoate), C(22)H(25)FO(4), the five-membered ring displays an envelope conformation, whereas the two six-membered rings show the different conformations, viz. chair and half-chair. As for the seven-membered ring, the dihedral angle between the mean planes formed by the four C atoms of the envelope unit and the three C and one O atoms of the six-membered chair is 68.67 (2)°; these two mean planes are nearly perpendicular to the ep-oxy ring with angles of 87.97 (2)and 88.14 (2)°, respectively.

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4β-Hy-droxy-12,13-ep-oxy-trichothec-9-ene.

Project description:The asymmetric unit in the crystal of the title compound, C(15)H(22)O(3), contains two independent mol-ecules with similar structures. Each mol-ecule contains two six-membered rings and one five-membered ring. The five-membered ring displays an envelope conformation with the C atom linking the epoxy group as the flap, while the two six-membered rings show half-chair conformations. The two independent mol-ecules are linked by an O-H⋯O hydrogen bond. These dimers are further linked by O-H⋯O hydrogen bonds, forming supra-molecular chains running along the a axis.

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Project description:In the title compound, C(15)H(22)O(3), the five-membered ring displays an envelope conformation, whereas the two six-membered rings show different conformations, viz. chair and half-chair. In the crystal, mol-ecules are linked through inter-molecular O-H⋯O hydrogen bonds, forming chains running along the b axis.

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8β-Acet-oxy-14α-benzo-yloxy-N-ethyl-3α,10β,13β,15α-tetra-hydr-oxy-1α,6α,16β-trimeth-oxy-4β-(methoxy-methyl-ene)aconitane: aconifine from Aconitum karakolicum Rapaics.

Project description:The title compound, C(34)H(47)NO(12), is the norditerpenoid alkaloid aconifine isolated from the leaves and tubers of Aconitum karakolicum Rapaics. It has a lycoctonine carbon skeleton and contains four six-membered rings and two five-membered rings; its geometry is similar to that observed in other lycoctonine-type diterpenoid alkaloids. There are two intra-molecular O-H⋯O hydrogen bonds which close five- and seven-membered pseudo-rings, respectively. In the crystal, two inter-molecular O-H⋯O hydrogen bonds cross-link the mol-ecules into double chains along the a axis.

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17?-Acet-oxy-11?-hy-droxy-6?-methyl-pregn-4-ene-3,20-dione.

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6β-Acet-oxy-1α,7β,11β,15β-tetra-hydr-oxy-7α,20-ep-oxy-ent-kaur-16-ene.

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8β-Acet-oxy-14α-benzo-yloxy-N-methyl-13β,15α-dihy-droxy-1α,6α,16β-trimeth-oxy-4β-(meth-oxy-meth-yl)aconitane: hypaconitine isolated from 'fuzi'.

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Acet-oxy-γ-valerolactone.

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Poly[(μ-2-acet-oxy-benzoato)(2-acet-oxy-benzoato)-μ-aqua-mercury(II)].

Project description:In the title compound, [Hg(C(9)H(7)O(4))(2)(H(2)O)](n), the Hg(II) ion is five-coordinated by three acetylsalicylate anions and water leading to the formation of a coordination polymer extending parallel to (001). O-H⋯O and C-H⋯O hydrogen bonds are effective in the stabilization of the crystal structure.

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