science

Isomigrastatin

Isomigrastatin is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Isomigrastatin rather than just read about it. In short: Isomigrastatin is an analogue of migrastatin, an organic compound that naturally occurs in the Streptomyces platensis bacteria. Isomigrastatin has shown promise as a drug in the treatment of cancer.

Key takeaways

Isomigrastatin belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Isomigrastatin to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Isomigrastatin from memory before moving on to harder problems.

Reference excerpt

Isomigrastatin is an analogue of migrastatin, an organic compound that naturally occurs in the Streptomyces platensis bacteria. Isomigrastatin has shown promise as a drug in the treatment of cancer. A laboratory synthesis was reported in 2007.

Synthesis

Total synthesis Migrastatin synthesis is a precursor of isomigrastatin. In order to synthesize isomigrastatin, reagent 11 and 15 need to be prepared. Through LACDAC reaction, Luche reduction, aqueous Ferrier rearrangement and Epoxidation, reagent 6, 7, 8, 9, 10 are synthesized to 11. Aldehyde 12 reacts is alkyldenated by Witting reagent 13 to make 14, and 14 is hydrogenated to afford 15.

Fragment coupling of intermediate 11 and 15 would be the next step. Using lithium borohydride, lactol arrangement of reagent 11 is reduced to create alcohol 16 which could be converted to 17 as well. Coupled with phosphorane 15, reagent 16 and 17 are oxidized to synthesize aldehyde 18.

Enone 18 is then reduced by (S)-Me-CBS Corey catalyst to make intermediate 19, and lithium cyanomethylcuprate is added to make intermediate 21.

Acylation of alcohol 21 with racemic selenoacid 23 then leads to be intermediate 24, and ring-closing metathesis of 24 causes intermediate 26. Then it finally affords isomigrastatin by oxidative deselenation.

Biosynthesis In terms of natural product, isomigrastatin is the polyketide that contains the glutarimide. Biosynthesis of isomigrastatin starts with the PKS product 10 which is derived from S.platensis. PKS product that is lack of methyltransferase domain in module-5, a ketoreductase domain in module-8, and a KR and an enoylreductase domain in module-10 is needed to synthesize intermediate for isomigrastatin. On top of that, four tailoring steps are followed through intermediates. First, hydroxylation at C-8. Second, O-methylation at OHC-8. Third, dehydration at C-17 OH. Last, C-16 and C-17 olefin is reduced. PKS product 10 is then isolated to isomigrastatin.

References

Illustrations

Worked examples

Example 1 — a first encounter with Isomigrastatin

Start with the simplest possible case. Write down what Isomigrastatin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Isomigrastatin before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Isomigrastatin ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Isomigrastatin

In research: Isomigrastatin appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Isomigrastatin in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Isomigrastatin is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ethers, Glutarimides, Macrolides, so understanding it makes those chapters shorter.
In everyday life: Look for Isomigrastatin outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Isomigrastatin in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Isomigrastatin means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Isomigrastatin out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Isomigrastatin in simple terms?

Isomigrastatin is an analogue of migrastatin, an organic compound that naturally occurs in the Streptomyces platensis bacteria. Isomigrastatin has shown promise as a drug in the treatment of cancer.

Why does Isomigrastatin matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Isomigrastatin?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Isomigrastatin.