## 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 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
- DOI
- 10.1002/mrc.2656
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
## 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
## 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
## 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
## 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