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<p>in the degree of engineered synthesis employed. Complex or fragile functional groups are often more cost-effective to extract directly from an organism than to prepare from simpler precursors, making semisynthesis the preferred approach for complex natural products.</p>

<p><big> Notable examples in drug development </big></p>
<p>Practical applications of semisynthesis include the groundbreaking isolation of the antibiotic <a href="page.php?w=chlortetracycline">chlortetracycline</a> and the subsequent semisynthesis of antibiotics such as <a href="page.php?w=tetracycline">tetracycline</a>,</p><p>
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