✦ LIBER ✦

Structural determination of salsolins A and B, new antioxidant polyoxygenated triterpenes from Salsola baryosma, by 1D and 2D NMR spectroscopy

✍ Scribed by Zaheer Ahmad; Sajid Mehmood; Itrat Fatima; Abdul Malik; Rehana Ifzal; Nighat Afza; Lubna Iqbal; Mehreen Latif; Tanveer Ahmad Nizami

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 145 KB
Volume: 46
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.2119

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Salsolins A (1) and B (2), the new triterpenes, have been isolated from the chloroform soluble fraction of Salsola baryosma along with 2α,3β,23,24‐tetrahydroxyurs‐12‐en‐28‐oic acid (3) reported for the first time from this species. Their structures have been assigned from ^1^H and ^13^C NMR spectra, DEPT and by 2D COSY, NOESY, HMQC and HMBC experiments. The compounds 1–3 showed significant antioxidant activity. Copyright © 2008 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Structural determination of atricins A a

Structural determination of atricins A and B, new triterpenes from Perovskia atriplicifolia, by 1D and 2D NMR spectroscopy

✍ Shagufta Perveen; Abdul Malik; Rasool Bakhsh Tareen 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 97 KB 👁 1 views

## Abstract Atricins A (1) and B (2), two new oleanane‐type triterpenes have been isolated from the chloroform‐soluble fractions of __Perovskia atriplicifolia__ and their structures assigned from ^1^H and ^13^C‐NMR spectra, Distortion Enhancement by Polarization Trasfer (DEPT) and by 2D‐COSY, HMQC,

Structural determination of silymins A a

Structural determination of silymins A and B, new pentacyclic triterpenes from Silybum marianum, by 1D and 2D NMR spectroscopy

✍ Ejaz Ahmed; Atia tun Noor; Abdul Malik; Sadia Ferheen; Nighat Afza 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 109 KB 👁 1 views

## Abstract Silymins A (1) and B (2), the new pentacyclic triterpenes, have been isolated from ethyl acetate fraction of __Silybum marianum__ and their structures assigned from ^1^H and ^13^C NMR spectra, DEPT and by 2D COSY, NOE and HMBC experiments. Copyright © 2007 John Wiley & Sons, Ltd.

Isolation and structural determination o

Isolation and structural determination of sorbinols A and B, new triterpenes from Sorbus cashmariana, by 1D and 2D NMR spectroscopy

✍ Mehdi Hassan Kazmi; Ejaz Ahmed; Saira Hameed; Abdul Malik; Muhammad Ashraf 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 110 KB 👁 1 views

## Abstract Two new pentacyclic triterpenes, sorbinols A (1) and B (2) have been isolated from the ethyl acetate fraction of __Sorbus cashmariana__ and their structures assigned from ^1^H and ^13^C NMR spectra, DEPT and by 2D COSY, NOE, HMQC and HMBC experiments. Both 1 and 2 showed moderate inhibi

Structure determination of salisomide an

Structure determination of salisomide and salisoflavan, two new secondary metabolites from Salsola imbricata, by 1D and 2D NMR spectroscopy

✍ Muhammad Saleem; Naseem Akhter; Muhammad Shaiq Ali; Mamona Nazir; Naheed Riaz; M 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 91 KB

## Abstract Chromatographic analysis of the alcoholic extract from __Salsola imbricata__ yielded two new secondary metabolites, salisomide (1) and salisoflavan (2). Their structures were established with the help of spectroscopic techniques including COSY, HMQC and HMBC NMR experiments. Copyright ©

Structural determination of abutilins A

Structural determination of abutilins A and B, new flavonoids from Abutilon pakistanicum, by 1D and 2D NMR spectroscopy

✍ Bakhat Ali; Muhammad Imran; Riaz Hussain; Zaheer Ahmed; Abdul Malik 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 117 KB

## Abstract Two new flavonoids, abutilin A and B, were isolated from the chloroform soluble fraction of __Abutilon pakistanicum__ and their structures assigned from ^1^H and ^13^C NMR spectra, DEPT and by 2D COSY, HMQC and HMBC experiments. Ferulic acid (3), (__E__)‐cinnamic acid (4), 5‐hydroxy‐4′,

Structural determination of quercusides

Structural determination of quercusides A and B, new flavonoid glucosides from Quercus incana, by 1D and 2D NMR spectroscopy

✍ Benish Iftikhar; Shagufta Perveen; Abdul Malik; Najma Sultana; Saeed Arayne; Pir 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 99 KB

## Abstract Quercusides A and B, new flavonoid glucosides have been isolated from the chloroform soluble fractions of __Quercus incana__. Their structures were assigned from ^1^H and ^13^C nuclear magnetic resonance spectra, distortionless enhancement by polarization transfer (DEPT) and by correlat