| abstract |
The present invention relates to the provision of a polynucleotide comprising one or more functional fragments of a biosynthetic gene cluster involved in the production of a compound of formula (I) or (I'). The present invention also provides a method of preparing a compound of formula (I) or (I) or of formula (II) to (VII), (XI) to (XIV) and (XVII) and (XVIII). Moreover, the use of such compound as a pharmaceutical composition is also provided in the present invention. |