𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Structure elucidation and NMR assignments of two unusual monoterpene indole alkaloids from Psychotria stachyoides

✍ Scribed by Antonia Torres Ávila Pimenta; Raimundo Braz-Filho; Piero Giuseppe Delprete; Elnatan Bezerra de Souza; Edilberto Rocha Silveira; Mary Anne Sousa Lima


Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
96 KB
Volume
48
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

Two unusual monoterpene indole alkaloids, stachyoside (1) and nor‐methyl‐23‐oxo‐correantoside (2), have been isolated from the aerial parts of Psychotria stachyoides. The structural elucidation of both compounds was performed by the aid of HRESIMS, FT‐IR, and 1D‐ and 2D‐NMR techniques including COSY, HSQC, HMBC, and NOESY. Copyright © 2010 John Wiley & Sons, Ltd.


📜 SIMILAR VOLUMES


Structure elucidation and NMR assignment
✍ Giangiacomo Beretta; Giulio Vistoli; Enrico Caneva; Cecila Anselmi; Roberto Maff 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 124 KB

## Abstract The complete ^1^H, ^13^C and ^15^N NMR spectral assignments of two new alkaloids isolated from chestnut honey and structurally related to kynurenic acid have been made using 1‐D and 2‐D NMR techniques, including COSY, HMQC and HMBC experiments. The new compounds have been identified as

Structure elucidation of two new bisbenz
✍ Amarendra Patra; Sumana Ghosh; Biswapati Mukherjee 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 224 KB

## Abstract Besides three known biphenyldibenzodioxinbisbenzylisoquinoline alkaloids, two novel alkaloids of the same group have been isolated from the fruits of __Tiliacora racemosa__. The structures of these new compounds designated tiliaimine and nordinklacorine were established on the basis of

Structure elucidation of two new unusual
✍ Ozlem Demirkiran; Gulacti Topcu; Javid Hussain; Viqar Uddin Ahmad; M. Iqbal Chou 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 137 KB

## Abstract Two new unusual monoterpene glycosides, (__Z__)‐3,6‐dimethyl‐3‐(β‐D‐__O__‐glucosylmethylene)cyclohept‐4‐ene‐1‐one (1) and 3,6‐dimethyl‐3‐(β‐D‐__O__‐glucosylmethylene)cycloheptanone (2) have been isolated along with five known compounds, 3‐hydroxy‐4‐methoxybenzoic acid, 6,7‐dihydroxycoum

Structure elucidation and NMR assignment
✍ Yiguang Chen; Changlun Shao; Zhongjing Huang; Ying Zhang; Xiaoling Cai; Zhigang 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 83 KB 👁 1 views

## Abstract The structure elucidations and complete ^1^H and ^13^C NMR assignments are reported for two new natural products: 3‐benzylidene‐8,8a‐dihydroxy‐2‐methyl‐hexahydro‐pyrrolo[1,2‐a]pyrazine‐1,4‐dione(1) and 4‐hydroxy‐6‐(hydroxy‐phenyl‐methyl)‐N‐(3‐methyl‐butyryl)‐nicotinamide (2). Both of th

Structure elucidation and NMR assignment
✍ Xiao-Ling Wang; Anne-Emmanuelle Hay; An Matheeussen; Mahabir P. Gupta; Kurt Host 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 141 KB

## Abstract Phytochemical investigation of dichloromethane (DCM) extract from the stems of __Paragonia pyramidata__ var. __pyramidata__ L. Rich. (Bur.) resulted in the isolation and characterization of two new triterpenoids 3β,19β‐dihydroxylup‐12, 20(29)‐diene‐28‐oic acid (1) and 3β,19β‐dihydroxylu