The present invention provides a new compound of formula (I): extracted from a seaweed, and its use for inhibiting the growth of cancer cells, as well as methods for its extraction and isolation.

The present invention provides a new compound of formula (I): extracted from a seaweed, and its use for inhibiting the growth of cancer cells, as well as methods for its extraction and isolation.

This disclosure relates to picolinamides of Formula I and their use as fungicides. ##STR00001##

This disclosure relates to picolinamides of Formula I and their use as fungicides. ##STR00001##

The present invention relates to stereochemically defined polypropionates and methods for preparing and using the same. The stereochemically defined polypropionates may be useful in the synthesis of natural products and/or natural product-like libraries.

The present invention relates to stereochemically defined polypropionates and methods for preparing and using the same. The stereochemically defined polypropionates may be useful in the synthesis of natural products and/or natural product-like libraries.

Provided herein are biosynthetic methods for producing lactones, such as macrocyclic lactones, from fatty acids. The lactones produced using and/or during the biosynthetic methods are also provided.

Provided herein are biosynthetic methods for producing lactones, such as macrocyclic lactones, from fatty acids. The lactones produced using and/or during the biosynthetic methods are also provided.

Novel processes for the preparation of a compound of Formula I-2 substantially free of the 5,6-trans isomer:

##STR00001##

wherein

##STR00002##

R.sub.2, R.sub.3 and R.sub.4 are as defined in the specification are provided. Novel intermediates for the preparations of isomer free Prostaglandins and derivatives thereof are also provided.

Novel processes for the preparation of a compound of Formula I-2 substantially free of the 5,6-trans isomer:

##STR00001##

wherein

##STR00002##

R.sub.2, R.sub.3 and R.sub.4 are as defined in the specification are provided. Novel intermediates for the preparations of isomer free Prostaglandins and derivatives thereof are also provided.