Synthesis and properties of chiral open-ring acyclic nucleoside bisphosphonates

2005 ◽  
Author(s):  
Petra Doláková ◽  
Milena Masojídková ◽  
Antonín Holý
Keyword(s):  
Open Ring ◽  
Acyclic Nucleoside

Acyclic nucleoside analogs: synthesis of open-ring riboside or deoxyriboside analogs lacking C(3') or the C(3')-C(4') bond

1979 ◽  
Vol 44 (21) ◽  
pp. 3733-3734 ◽  
Author(s):  
Jerry D. Bryant ◽  
Gene E. Keyser ◽  
Jorge R. Barrio
Keyword(s):  
Nucleoside Analogs ◽  
Open Ring ◽  
Acyclic Nucleoside

Synthesis and Properties of Chiral Open-Ring Acyclic Nucleoside Bisphosphonates

2007 ◽  
Vol 74 (3) ◽  
pp. A72-A72
Author(s):  
P DOLAKOVA ◽  
M DRACINSKY ◽  
A HOLY
Keyword(s):  
Open Ring ◽  
Acyclic Nucleoside

Efficient synthesis of "open-ring, close-ring" acyclic nucleoside phosphonates

2008 ◽  
Author(s):  
Petr Jansa ◽  
Martin Dračínský ◽  
Antonín Holý
Keyword(s):  
Efficient Synthesis ◽  
Open Ring ◽  
Acyclic Nucleoside Phosphonates ◽  
Acyclic Nucleoside

Aerospace series. Open ring insert tool, square drive

2008 ◽  
Keyword(s):  
Open Ring

Age and architecture of the largest African Baobabs from Mayotte, France

2020 ◽  
Author(s):  
Adrian Patrut ◽  
Roxana Patrut ◽  
Laszlo Rakosy ◽  
Karl von Reden
Keyword(s):  
Life Cycle ◽  
Radiocarbon Dating ◽  
Cluster Structure ◽  
Radiocarbon Date ◽  
General State ◽  
Adansonia Digitata ◽  
Open Ring ◽  
The Indian Ocean ◽  
Ring Shaped Structure ◽  
Comoro Islands

The volcanic Comoro Islands, located in the Indian Ocean in between mainland Africa and Madagascar, host several thousand African baobabs (Adansonia digitata). Most of them are found in Mayotte, which currently belongs to France, as an overseas department. We report the investigation of the largest two baobabs of Mayotte, the Big baobab of Musical Plage and the largest baobab of Plage N’Gouja. The Big baobab of Musical Plage exhibits a cluster structure and consists of 5 fused stems, out of which 4 are common stems and one is a false stem. The baobab of Plage N’Gouja has an open ring-shaped structure and consists of 7 partially fused stems, out of which 3 stems are large and old, while 4 are young. Several wood samples were collected from both baobabs and analyzed via radiocarbon dating. The oldest dated sample from the baobab of Musical Plage has a radiocarbon date of 275 ± 25 BP, which corresponds to a calibrated calendar age of 365 ± 15 yr. On its turn, the oldest sample from Plage N’Gouja has a radiocarbon date of 231 ± 20 BP, which translates into a calibrated age of 265 ± 15 yr. These results indicate that the Big baobab of Musical Plage is around 420 years old, while the baobab of Plage N’Gouja has an age close to 330 years. In present, both baobabs are in a general state of deterioration with many broken or damaged branches, and the Baobab of Plage N’Gouja has several missing stems. These observations suggest that the two baobabs are in decline and, most likely, close to the end of their life cycle.

About Frequency Characteristics of Electric Fields of Cylindrical Piezoceramic Antenna with Screen in the Form of an Open Ring Layer

2016 ◽  
Vol 8 (1) ◽  
pp. 01029-1-01029-5 ◽  
Author(s):  
Z. T. Gusak ◽  
◽  
A. G. Leiko ◽  
Keyword(s):  
Electric Fields ◽  
Frequency Characteristics ◽  
Open Ring

Acyclic nucleoside analogues derived from 2-azapurines

1993 ◽  
Vol 58 (s1) ◽  
pp. 250-252 ◽  
Author(s):  
D. Hocková ◽  
A. Holý ◽  
H. Dvořáková
Keyword(s):  
Nucleoside Analogues ◽  
Acyclic Nucleoside Analogues ◽  
Acyclic Nucleoside

New 2-Alkynyl Derivatives of the Acyclic Nucleoside 9-(2,3-Dihydroxypropyl)adenine and Their 6-Guanidinopurine Counterparts as Potential Effectors of Adenosine Receptors

2003 ◽  
Vol 68 (11) ◽  
pp. 2201-2218 ◽  
Author(s):  
Michal Česnek ◽  
Antonín Holý ◽  
Milena Masojídková
Keyword(s):  
Adenosine Receptors ◽  
Sonogashira Coupling ◽  
Acyclic Nucleoside ◽  
Derivatives Of

A series of the new 2-alkynyl derivatives of the acyclic nucleoside 9-(2,3-dihydroxypropyl)- adenine and their 6-guanidinopurine analogues were prepared by the Sonogashira coupling. The effect of the prepared compounds on A1 and A2A receptors was examined.

Acyclic nucleoside phosphonates and human telomerase inhibition

2005 ◽  
Author(s):  
Miroslav Hájek ◽  
Naděžda Matulová ◽  
Ivan Votruba ◽  
Antonín Holý ◽  
Eva Tloušťová
Keyword(s):  
Telomerase Inhibition ◽  
Acyclic Nucleoside Phosphonates ◽  
Acyclic Nucleoside ◽  
Human Telomerase
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