what is the special isoprene rule?
Answer Posted / kani
this Special Isoprene Rule(SIR) was proposed by Ingold in 1925.
it states that" isoprene units in the terpenoid are linked together".
branched portion of isoprene unit is head and unbranched one is tail.
as per special isoprene rule the isoprene units are linked in head to tail fashion.
c c
/ : /
c-c-c-c- c-c-c-c
:
head tail head tail
eg: myrcene, linonene, cadinene,abietic acid etc
exceptions to the SIR: cyrtone, lavandulol etc
cryptol has 9 C atoms and cannot be divided into two isoprene units.
lavandulol is linked tail to tail.
| Is This Answer Correct ? | 21 Yes | 8 No |
Post New Answer View All Answers
What is optical isomerism? Which compounds exhibit optical isomerism?
How do hydrophobic and hydrophilic residues arrange themselves in globular proteins?
Do enzymes act better under acid or basic ph?
Explain threshold energy?
Aldehydes and ketones are known as?
Is it expected a change in the primary, in the secondary or in the tertiary structure of a protein to produce more functional consequences?
Explain the reduction of the activation energy of chemical reactions?
Bacteria are prokaryotic cells, i.e., They do not have membrane-delimited nucleus. Eukaryotes have cells with delimited nucleus. Where in these types of cells can dna are found?
How the production of rna called? What is the enzyme that catalyzes the process?
What is the primary structure of a protein?
What are respectively some remarkable functions of hemoglobin?
which property among the following generally decreases from top to bottom in a group 1a? 1. Electropositive, density, basic nature, classical reactivity
Why is not it correct to assert that dna self-replicates?
Two children have a neurological disorder. When cells from the two patients were fused to form heterokaryons containing nuclei from both patients and cultured, the cells displayed normal metabolism. Cells from either patient exhibited abnormal metabolism when cultured separately.what does these results indicate?
Which organ and subcellular site are most important for fatty acid biosynthesis?