PIKKA TINY RABIT SERIES

There are only certain places in the world where you can find a Pika. This is the reason that Pika have large ears. They warn each other if a predator is nearby and alert each other by whistling. Within their colonies, each one has its own den. Pika are animals that live close to each other and in colonies. However, in extreme heat, their fur is still thick enough that they may suffer. When the weather warms up a Pika’s coat of fur thins out so they don’t get too hot in the sun. The dark color of their fur helps them blend in with the rocks found in their natural surroundings. They weigh between 2.6 oz and 10 ounces, making them about the same weight as a hamster.Įither black or brown in color, a Pika has thick fur so that they don’t get cold during the winter months. In comparison, a bowling pin is twice as tall as a Pika. The average Pika is seven or eight inches long. Pika Appearance & BehaviorĪ Pika’s body is small and short. Since Pika make a sound that is shrill, the word is used to describe the animal.

A German naturalist used it to describe the noise made by the Russian Pika, which means to squeak.

The word Pika dates back to the years between 18. American Pika are a part of the lagomorph group and are also its smallest members. It is part of the Mammalia class and the Ochotinade family. The scientific name of the Pika is Ochotona Minor.

They warn each other of predators nearby.

Pika is an animal that is closely related to the rabbit.

The American Pika represents climate change.

One of those species calls the southern hemisphere home while the other one calls the northern hemisphere home. The park is one of the few places on Earth where two subspecies of the animal are found. Their bodies are small and round.Īt Rocky Mountain National Park, Pika live up high in the trees. One of the ways you can tell you are looking at a Pika is that they don’t have tails. Even though they resemble a rat, their closest relatives in the animal kingdom are hares and rabbits. In CCRF-CEM cells, the cyclopropyl derivative 75 is deaminated to the guanine derivative PMEG ( 3) which is then converted to its diphosphate.Parts of the Northern Hemisphere are home to the Pika. The highest cytostatic activity in vitro was exhibited by the following N 6-derivatives of 2,6-diamino-9-purine (PMEDAP): 2,2,2-trifluoroethyl ( 53), allyl ( 54), ( 68), cyclopropyl ( 75) and dimethyl ( 91). Alkylation of N 6-substituted 2,6-diaminopurines with ( R)-oxirane ( 155) followed by reaction of thus-obtained intermediates 156 with dimethylformamide dimethylacetal and condensation with diisopropyl phosphonate ( 158) followed by deprotection of the intermediates 159 gave N 6-substituted 2,6-diamino-9-purines 160- 163. Alkylation of 2-amino-6-chloropurine ( 9) with diethyl phosphonate ( 148) gave the diester 149 which was analogously converted to N 6-substituted 2,6-diamino- 9-purines 151- 153. Diesters 32 were also obtained by reaction of N 6-substituted purines with synthons 23- 25 bearing diisopropoxyphosphoryl group.

PIKKA TINY RABIT SERIES

N 6-Substituted adenine and 2,6-diaminopurine derivatives of 9- (PME), 9- and enantiomeric ( S)-PMP series were synthesized by reactions of primary or secondary amines with 6-chloro-9-purines ( 29- 31) followed by treatment of the diester intermediates 32 with bromo(trimethyl)silane and hydrolysis.

Pikka tiny rabit