Rhodomentones A and B, novel meroterpenoids with unique NMR characteristics from Rhodomyrtus tomentosa

2016 ◽  
Vol 14 (30) ◽  
pp. 7354-7360 ◽  
Author(s):  
Hong-Xin Liu ◽  
Kai Chen ◽  
Yao Yuan ◽  
Zhi-Fang Xu ◽  
Hai-Bo Tan ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Single Crystal ◽  
Chemical Transformation ◽  
Spectroscopic Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Molecular Calculation ◽  
Rhodomyrtus Tomentosa

Two novel meroterpenoids were isolated from Rhodomyrtus tomentosa. Their structures with unique NMR characteristics were determined by extensive spectroscopic analysis, single-crystal X-ray diffraction, quantum molecular calculation, chemical transformation as well as total synthesis.

Structural elucidation, total synthesis, and cytotoxic activity of effphenol A

2020 ◽  
Vol 18 (44) ◽  
pp. 9035-9038
Author(s):  
Hongxin Liu ◽  
Shanchong Chen ◽  
Xiao Zhang ◽  
Chunmao Dong ◽  
Yuchan Chen ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Single Crystal ◽  
Cytotoxic Activity ◽  
Spectroscopic Analysis ◽  
Structural Elucidation ◽  
X Ray Diffraction ◽  
X Ray

Effphenol A was isolated and elucidated through spectroscopic analysis together with single-crystal X-ray diffraction experiments and further confirmed by the first biomimetic total synthesis.

2′-O,5-dimethyluridine: A total synthesis and single crystal X-ray diffraction study

1993 ◽  
Vol 30 (5) ◽  
pp. 1309-1315 ◽  
Author(s):  
Arthur F. Lewis ◽  
Ganapathi R. Revankar ◽  
Michael E. Hogan
Keyword(s):  
Total Synthesis ◽  
Single Crystal ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Four New Phloroglucinol-Terpene Adducts from the Leaves of Myrciaria cauliflora

2020 ◽  
Author(s):  
Ming Chen ◽  
Jia-Qing Cao ◽  
Wen-Jing Wang ◽  
Ni-Ping Li ◽  
Yan Wu ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Single Crystal ◽  
Spectroscopic Analysis ◽  
X Ray Diffraction ◽  
Gram Positive ◽  
Electronic Circular Dichroism ◽  
X Ray ◽  
Gram Positive Bacteria ◽  
Multiresistant Strains ◽  
Circular Dichroïsm

Abstract Myrcauones A–D (1–4), four new phloroglucinol–terpene adducts were isolated from the leaves of Myrciaria cauliflora. Their structures with absolute configurations were elucidated by combination of spectroscopic analysis, single crystal X-ray diffraction, and electronic circular dichroism (ECD) calculations. Compound 1 was a rearranged isobutylphloroglucinol–pinene adduct featuring an unusual 2,3,4,4a,10,11-hexahydro-1H-3,11a-methanodibenzo[b,f]oxepin backbone. Compound 4 showed moderate antibacterial activity against Gram-positive bacteria including multiresistant strains. Graphic Abstract

Electron Microscopy of Shock Loaded Polycrystalline Beryllium

1974 ◽  
Vol 32 ◽  
pp. 506-507 ◽  
Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens
Keyword(s):  
Electron Microscopy ◽  
Wave Propagation ◽  
Structural Change ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Shock Loading ◽  
Slip Systems ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

2003 ◽  
Vol 218 (5) ◽  
Author(s):  
Süheyla Özbey ◽  
F. B. Kaynak ◽  
M. Toğrul ◽  
N. Demirel ◽  
H. Hoşgören
Keyword(s):  
Crystal Structure ◽  
Inclusion Complex ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

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