Two novel tetracycles, cassibiphenols A and B from the flowers of Cassia siamea

Jun Deguchi; Tadahiro Sasaki; Yusuke Hirasawa; Toshio Kaneda; Idha Kusumawati; Osamu Shirota; Hiroshi Morita

doi:10.1016/j.tetlet.2014.01.023

Two novel tetracycles, cassibiphenols A and B from the flowers of Cassia siamea

Jun Deguchi
, Tadahiro Sasaki
, Yusuke Hirasawa
, Toshio Kaneda
, Idha Kusumawati
, Osamu Shirota
, Hiroshi Morita

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

11 Citations (Scopus)

Abstract

Chemical investigation of the flowers of Cassia siamea (Leguminosae), resulted in the isolation of two novel tetracycles connecting 5-(2-hydroxypropyl)benzene-1,3-diol, cassibiphenols A (1) and B (2). The structures were elucidated by analysis of the 1D, 2D NMR, and HRMS spectra. Synthesis of a tetracyclic core of 1 and 2 led to determine the absolute configuration of 1 and C-12 of 2.

Original language	English
Pages (from-to)	1362-1365
Number of pages	4
Journal	Tetrahedron Letters
Volume	55
Issue number	7
DOIs	https://doi.org/10.1016/j.tetlet.2014.01.023
Publication status	Published - 12 Feb 2014

Keywords

Biphenyl
Cassia siamea
Cassibiphenols A and B
Partial synthesis
Structure elucidation

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10.1016/j.tetlet.2014.01.023

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title = "Two novel tetracycles, cassibiphenols A and B from the flowers of Cassia siamea",

abstract = "Chemical investigation of the flowers of Cassia siamea (Leguminosae), resulted in the isolation of two novel tetracycles connecting 5-(2-hydroxypropyl)benzene-1,3-diol, cassibiphenols A (1) and B (2). The structures were elucidated by analysis of the 1D, 2D NMR, and HRMS spectra. Synthesis of a tetracyclic core of 1 and 2 led to determine the absolute configuration of 1 and C-12 of 2.",

keywords = "Biphenyl, Cassia siamea, Cassibiphenols A and B, Partial synthesis, Structure elucidation",

author = "Jun Deguchi and Tadahiro Sasaki and Yusuke Hirasawa and Toshio Kaneda and Idha Kusumawati and Osamu Shirota and Hiroshi Morita",

note = "Funding Information: This work was supported in part by Grants-in-Aid for Scientific Research from Japan Society for the Promotion of Science (JSPS) . ",

year = "2014",

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doi = "10.1016/j.tetlet.2014.01.023",

language = "English",

volume = "55",

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journal = "Tetrahedron Letters",

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TY - JOUR

T1 - Two novel tetracycles, cassibiphenols A and B from the flowers of Cassia siamea

AU - Deguchi, Jun

AU - Sasaki, Tadahiro

AU - Hirasawa, Yusuke

AU - Kaneda, Toshio

AU - Kusumawati, Idha

AU - Shirota, Osamu

AU - Morita, Hiroshi

N1 - Funding Information: This work was supported in part by Grants-in-Aid for Scientific Research from Japan Society for the Promotion of Science (JSPS) .

PY - 2014/2/12

Y1 - 2014/2/12

N2 - Chemical investigation of the flowers of Cassia siamea (Leguminosae), resulted in the isolation of two novel tetracycles connecting 5-(2-hydroxypropyl)benzene-1,3-diol, cassibiphenols A (1) and B (2). The structures were elucidated by analysis of the 1D, 2D NMR, and HRMS spectra. Synthesis of a tetracyclic core of 1 and 2 led to determine the absolute configuration of 1 and C-12 of 2.

AB - Chemical investigation of the flowers of Cassia siamea (Leguminosae), resulted in the isolation of two novel tetracycles connecting 5-(2-hydroxypropyl)benzene-1,3-diol, cassibiphenols A (1) and B (2). The structures were elucidated by analysis of the 1D, 2D NMR, and HRMS spectra. Synthesis of a tetracyclic core of 1 and 2 led to determine the absolute configuration of 1 and C-12 of 2.

KW - Biphenyl

KW - Cassia siamea

KW - Cassibiphenols A and B

KW - Partial synthesis

KW - Structure elucidation

UR - https://www.scopus.com/pages/publications/84893785375

U2 - 10.1016/j.tetlet.2014.01.023

DO - 10.1016/j.tetlet.2014.01.023

M3 - Article

AN - SCOPUS:84893785375

SN - 0040-4039

VL - 55

SP - 1362

EP - 1365

JO - Tetrahedron Letters

JF - Tetrahedron Letters

IS - 7

ER -

Two novel tetracycles, cassibiphenols A and B from the flowers of Cassia siamea

Abstract

Keywords

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