128459-48-3

Upstream product

• 69143-05-1 (E)-4-methyl-pent-2-en-1-ol 
• 3876-47-9 (2R*,3S*)-2,4-dimethyl-1,3-pentanediol 

Downstream Products

• 128459-46-1 (5R,6S)-6-Isopropyl-5-methyl-3-phenylsulfanyl-tetrahydro-pyran-2-one 
• 128459-49-4 (5R,6S)-3-Benzyloxy-6-isopropyl-5-methyl-tetrahydro-pyran-2-one 
• 128459-55-2 (6S,8R,9S)-11-Benzyloxy-8-isopropyl-9-methyl-1,7-dioxa-spiro[5.5]undec-2-en-4-one 
• 128459-54-1 2-((3S,4R)-1-Benzyloxy-4-hydroxy-3,5-dimethyl-hexyl)-pyran-4-one 
• 128459-51-8 (Z)-(8S,9S)-6-Benzyloxy-9-hydroxy-1-methoxy-8,10-dimethyl-undec-1-en-3-yn-5-one 
• 128459-53-0 (Z)-(8S,9S)-6-Benzyloxy-9-hydroxy-1,1,3-trimethoxy-8,10-dimethyl-undec-3-en-5-one 
• 128459-57-4 ((2R,4R,6R,8S,9R,11R)-11-Benzyloxy-8-isopropyl-9-methyl-2-vinyl-1,7-dioxa-spiro[5.5]undec-4-yloxy)-tert-butyl-dimethyl-silane 
• 128478-22-8 2-[(2S,4R,6R,8S,9R,11R)-11-Benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-8-isopropyl-9-methyl-1,7-dioxa-spiro[5.5]undec-2-yl]-ethanol 
• 128459-56-3 (2R,6R,8S,9R,11R)-11-Benzyloxy-8-isopropyl-9-methyl-2-vinyl-1,7-dioxa-spiro[5.5]undecan-4-one 
• 128459-56-3 (2R,6R,8S,9R,11S)-11-Benzyloxy-8-isopropyl-9-methyl-2-vinyl-1,7-dioxa-spiro[5.5]undecan-4-one 

Relevant academic research and scientific papers

Synthesis of the spiroketal fragment of avermectin B(1b)

A new synthesis of the spiroketal fragment of the potent antiparasitic agent, avermectin B(1b), utilizing an improved procedure for the preparation of unsaturated spiroketals from lactones is described.