A simple and efficient procedure for the asymmetric synthesis of (−)-(R)-massoia lactone, (R)-δ-decalactone, and (+)-(3R,5R)-3-hydroxy-1,5-decanolide is described. Verbalactone was synthesized using Heck allylation at the key stage of construction of the carbon skeleton.

A novel procedure has been developed for the synthesis of (2S,4R,6R,8S)-2,4,8-trimethyl-1,7-dioxaspiro[5.5]undecane, a pheromone component of the shield bug Cantao Parentum, through intermediate cyclopropanol derivatives in the key stages of carbon chain construction and introduction of functional groups.

Simple and efficient asymmetric synthesis was developed of the cyclic scaffold of (-)-valilactone, an effective inhibitor of the pancreas lipase, applying the Keck allylation in the key stage of building up the carbon skeleton of the target molecule and of the unnatural (S)-isomer of Massoia lactone, lachnelluloic acid, possessing fungicidal properties, and (5R,7S)-7-hydroxy-5-dodecanolid, pheromone component of the Large Tree Nymph butterfly Idea leuconoe.

En route to the total synthesis of (+)-Neopeltolide, we explored Lewis acid-assisted diastereoselective allylation of MOM-protected 3-hydroxylhexanal with β-(2,2-diethoxyethyl)-substituted (allyl)tributylstannane. The hydrated form of scandium triflate was found to be essential for attaining high 1,3-anti-diastereoselectivity (d.r. 94:6), while the use of anhydrous catalyst resulted in a modest diastereocontrol (d.r. 76:24). The preferred 1,3-anti-selectivity in this transformation can be rationalized in the framework of the Reetz chelate model of asymmetric induction. The 1,3-anti-configuration of the product was confirmed by its conversion into the known C⁷-C¹⁶ building block of (+)-Neopeltolide. We also report an improved protocol for the synthesis of β-(2,2-diethoxyethyl)-substituted (allyl)tributylstannane, which can be utilized as a cost-efficient bipolar isoprenoid-type C₅-building block in the synthesis of natural compounds.

A new retrosynthetic procedure was developed for the synthesis of the macrocyclic core of a cytotoxic lactone (+)-neopeltolide utilizing cyclopropanol intermediates. The synthesis was suggested and ca

A simple and efficient asymmetric synthesis was performed of (+)-(S)-7,8-dihydrokanian and (4R,6R)-4-hydroxy-6-(2-phenylethyl)tetrahydro-2H-pyran-2-one involving Keck allylation in the key stage of building up the carbon scaffold of the target molecules.