2011
DOI: 10.1107/s1600536811014887
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Absolute configuration of fibaruretin B

Abstract: The title furan­oditerpenoid, known as fibaruretin B (systematic name: 2β,3α-dihy­droxy-2,3,7,8α-tetra­hydro­penianthic acid lactone), C20H24O7, was isolated from the roots of Arcangelisia flava. The absolute configurations at positions 2, 3, 4, 4a, 7, 9, 10a and 10b of fibaruretin B are S, R, S, R, S, S, S and S, respectively. In the crystal structure, the mol­ecules are linked into infinite chains along the c axis by O—H⋯O hydrogen bonds and weak C—H⋯O inter­actions.

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Cited by 4 publications
(1 citation statement)
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“…(67,68) Fibaruretin B (2β,3α-dihy-droxy-2,3,7,8α-tetra-hydro-penianthic acid lactone) was isolated from the roots of A. flava. (69) Furanoditerpenes were found in A. fl ava. (70) Palmatine, fibrecisine, berberines, tetrahydroberberines and aporphine derivatives are found in Fibraurea recisa.…”
Section: Cocculusmentioning
confidence: 99%
“…(67,68) Fibaruretin B (2β,3α-dihy-droxy-2,3,7,8α-tetra-hydro-penianthic acid lactone) was isolated from the roots of A. flava. (69) Furanoditerpenes were found in A. fl ava. (70) Palmatine, fibrecisine, berberines, tetrahydroberberines and aporphine derivatives are found in Fibraurea recisa.…”
Section: Cocculusmentioning
confidence: 99%