Information om | Engelska ordet CYCLOBUTANE

Exempel på hur man kan använda CYCLOBUTANE i en mening

• The cycloalkanes without side chains (also known as monocycloalkanes) are classified as small (cyclopropane and cyclobutane), common (cyclopentane, cyclohexane, and cycloheptane), medium (cyclooctane through cyclotridecane), and large (all the rest).
• The simplest alicyclic compounds are the monocyclic cycloalkanes: cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, and so on.
• The four carbon atoms in cyclobutane are not coplanar; instead, the ring typically adopts a folded or "puckered" conformation.
• Methylcycloalkanes are classed into compounds with small, normal and bigger cycloalkanes, where cyclopropane and cyclobutane are the small ones, cyclopentane, cyclohexane, cycloheptane are the normal ones and the rest are the bigger ones.
• Class 1 CPD photolyases are enzymes that process cyclobutane pyrimidine dimer (CPD) lesions from Gram-negative and Gram-positive bacteria, as well as the halophilic archaea Halobacterium halobium.
• Such dimerization, which can also occur in double-stranded RNA (dsRNA) involving uracil or cytosine, leads to the creation of cyclobutane pyrimidine dimers (CPDs) and 6–4 photoproducts.
• The second stereochemical relationship describes the orientation of three consecutive cyclobutane rings, and therefore is only relevant to ladderanes of n ≥ 2.
• Other types of thymine crosslinking, such as cyclobutane pyrimidine dimers (CPD) and pyrimidine (6-4) pyrimidone photoproducts (6-4PPs), are less commonly formed in endospores.
• Under light exposure, piperitone undergoes photodimerization, forming a polycyclic compound with a cyclobutane ring.
• As an alternative a pericyclic reaction mechanism is proposed, in which after intersystem crossing a radical cation and a radical anion are formed, which then recombine to the cyclobutane.
• The membrane that surrounds anammoxosomes in anammox bacteria contains unique lipids called “ladderane” lipids, which contain a series of cyclobutane ring structures.
• Chemically, it is a series of fused cyclobutane rings (a ladderane, with all-cis/all-syn geometry) that wraps around to join its ends and form a band, with cycloalkane edges.
• This pattern arises because the major UV-induced DNA photoproducts join two adjacent pyrimidines; the photoproduct is typically the cyclobutane pyrimidine dimer (CPD).
• centerThe absence of cyclobutane from the decomposition of the isodiazene derived from the saturated 5-membered azacycle is evidence against radical intermediates, and the process is also believed to be concerted and pericyclic.

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