Structure elucidation of olasubscorpioside C, a new rotameric biflavonoid glycoside from the stem barks of Olax subscorpioidea (Oliv)

Bienvenu Tsakem; Billy Tchegnitegni Toussie; Xavier Siwe-Noundou; Beaudelaire Kemvoufo Ponou; Rémy Bertrand Teponno; Syed Ghulam Musharraf; Leon Azefack Tapondjou

doi:10.1002/mrc.5375

Structure elucidation of olasubscorpioside C, a new rotameric biflavonoid glycoside from the stem barks of Olax subscorpioidea (Oliv)

Bienvenu Tsakem
, Billy Tchegnitegni Toussie
, Xavier Siwe-Noundou
, Beaudelaire Kemvoufo Ponou^*
, Rémy Bertrand Teponno^*
, Syed Ghulam Musharraf
, Leon Azefack Tapondjou

^*Corresponding author for this work

Pharmaceutical Sciences

Research output: Contribution to journal › Letter › peer-review

5 Citations (Scopus)

Abstract

From the n-butanol soluble fraction of the ethanol extract of the medicinal plant Olax subscorpioidea, a previously unreported rotameric biflavonoid glycoside constituted of 4′-O-methylgallocatechin-(4α → 8)-4′-O-methylgallocatechin as aglycone named olasubscorpioside C (1) along with the known 4′-O-methylgallocatechin (2) were isolated. Their structures were determined on the basis of spectrometric and spectroscopic techniques including HRFABMS, ¹H and ¹³C NMR, DEPT 135^o, HSQC, HMBC, ROESY, and CD followed by comparison with the reported data.

Original language	English
Pages (from-to)	497-503
Number of pages	7
Journal	Magnetic Resonance in Chemistry
Volume	61
Issue number	8
DOIs	https://doi.org/10.1002/mrc.5375
Publication status	Published - Aug 2023

Keywords

1D NMR
2D NMR
Olax subscorpioidea
biflavonoid
gallocatechin
prodelphinidin
rotamer
structure elucidation

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10.1002/mrc.5375

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@article{b22619b0dc144f578d9683614ee6277a,

title = "Structure elucidation of olasubscorpioside C, a new rotameric biflavonoid glycoside from the stem barks of Olax subscorpioidea (Oliv)",

abstract = "From the n-butanol soluble fraction of the ethanol extract of the medicinal plant Olax subscorpioidea, a previously unreported rotameric biflavonoid glycoside constituted of 4′-O-methylgallocatechin-(4α → 8)-4′-O-methylgallocatechin as aglycone named olasubscorpioside C (1) along with the known 4′-O-methylgallocatechin (2) were isolated. Their structures were determined on the basis of spectrometric and spectroscopic techniques including HRFABMS, 1H and 13C NMR, DEPT 135o, HSQC, HMBC, ROESY, and CD followed by comparison with the reported data.",

keywords = "1D NMR, 2D NMR, Olax subscorpioidea, biflavonoid, gallocatechin, prodelphinidin, rotamer, structure elucidation",

author = "Bienvenu Tsakem and Toussie, \{Billy Tchegnitegni\} and Xavier Siwe-Noundou and Ponou, \{Beaudelaire Kemvoufo\} and Teponno, \{R{\'e}my Bertrand\} and Musharraf, \{Syed Ghulam\} and Tapondjou, \{Leon Azefack\}",

note = "Publisher Copyright: {\textcopyright} 2023 John Wiley \& Sons Ltd.",

year = "2023",

month = aug,

doi = "10.1002/mrc.5375",

language = "English",

volume = "61",

pages = "497--503",

journal = "Magnetic Resonance in Chemistry",

issn = "0749-1581",

publisher = "John Wiley and Sons Ltd",

number = "8",

}

TY - JOUR

T1 - Structure elucidation of olasubscorpioside C, a new rotameric biflavonoid glycoside from the stem barks of Olax subscorpioidea (Oliv)

AU - Tsakem, Bienvenu

AU - Toussie, Billy Tchegnitegni

AU - Siwe-Noundou, Xavier

AU - Ponou, Beaudelaire Kemvoufo

AU - Teponno, Rémy Bertrand

AU - Musharraf, Syed Ghulam

AU - Tapondjou, Leon Azefack

PY - 2023/8

Y1 - 2023/8

N2 - From the n-butanol soluble fraction of the ethanol extract of the medicinal plant Olax subscorpioidea, a previously unreported rotameric biflavonoid glycoside constituted of 4′-O-methylgallocatechin-(4α → 8)-4′-O-methylgallocatechin as aglycone named olasubscorpioside C (1) along with the known 4′-O-methylgallocatechin (2) were isolated. Their structures were determined on the basis of spectrometric and spectroscopic techniques including HRFABMS, 1H and 13C NMR, DEPT 135o, HSQC, HMBC, ROESY, and CD followed by comparison with the reported data.

AB - From the n-butanol soluble fraction of the ethanol extract of the medicinal plant Olax subscorpioidea, a previously unreported rotameric biflavonoid glycoside constituted of 4′-O-methylgallocatechin-(4α → 8)-4′-O-methylgallocatechin as aglycone named olasubscorpioside C (1) along with the known 4′-O-methylgallocatechin (2) were isolated. Their structures were determined on the basis of spectrometric and spectroscopic techniques including HRFABMS, 1H and 13C NMR, DEPT 135o, HSQC, HMBC, ROESY, and CD followed by comparison with the reported data.

KW - 1D NMR

KW - 2D NMR

KW - Olax subscorpioidea

KW - biflavonoid

KW - gallocatechin

KW - prodelphinidin

KW - rotamer

KW - structure elucidation

UR - https://www.scopus.com/pages/publications/85162679609

U2 - 10.1002/mrc.5375

DO - 10.1002/mrc.5375

M3 - Letter

C2 - 37340817

AN - SCOPUS:85162679609

SN - 0749-1581

VL - 61

SP - 497

EP - 503

JO - Magnetic Resonance in Chemistry

JF - Magnetic Resonance in Chemistry

IS - 8

ER -

Structure elucidation of olasubscorpioside C, a new rotameric biflavonoid glycoside from the stem barks of Olax subscorpioidea (Oliv)

Abstract

Keywords

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