55123-40-5

Upstream product

• 55093-82-8 4α-carboxy-1β,4β-dimethyl-11-methylene-(2α,6α)-tricyclo<6.3.0.0^2,6>undec-8-en-10-one 
• 7686-77-3 3-cyclopentene-1-carboxylic acid 
• 84694-05-3 (1R*,3S*,5S*)-7,7-dichloro-3-methyl-6-oxobicyclo<3.2.0>heptane-3-carboxylic acid 
• 102808-35-5 2β,4β-dicarboxy-3,3-(ethylenedioxy)-7α-carboxy-7β-methyl-(1α,5α)-bicyclo<3.3.0>octane 
• 38311-39-6 4α-<2-chloro-4-(propylthio)-1-buten-3-yl>-7α-carbomethoxy-7β,4β-dimethyl-(1α,5α)-bicyclo<3.3.0>octan-3-one 
• 102808-38-8 4α-(3-oxo-1-buten-2-yl)-7α-carbomethoxy-4β,7β-dimethyl-(1α,5α)-bicyclo<3.3.0>octan-3-one 
• 38311-41-0 4α-(3-oxo-1-buten-2-yl)-7α-carboxy-4β,7β-dimethyl-(1α,5α)-bicyclo<3.3.0>octan-3-one 
• 38311-40-9 (2R,3aS,3bS,7aS)-6a-Hydroxy-2,3b-dimethyl-4-methylene-5-oxo-decahydro-cyclopenta[a]pentalene-2-carboxylic acid methyl ester 
• 38311-42-1 (2R,3aS,3bS,7aS)-6a-Hydroxy-2,3b-dimethyl-4-methylene-5-oxo-decahydro-cyclopenta[a]pentalene-2-carboxylic acid 
• 55093-81-7 4α-carbomethoxy-1β,4β-dimethyl-11-methylene-(2α,6α)-tricyclo<6.3.0.0^2,6>undec-8-en-10-one 
• 33200-82-7 2,7β-dimethyl-7α-carbomethoxy-(1α,5α)bicyclo<3.3.0>octan-3-one 
• 34085-86-4 7α-carbomethoxy-7β-methyl-(1α,5α)-bicyclo<3.3.0>octan-3-one 
• 58026-18-9 (2S,3aR,3bS,7aS)-4-[1-Hydroxy-meth-(Z)-ylidene]-2,3b-dimethyl-5-oxo-2,3,3a,3b,4,5,7,7a-octahydro-1H-cyclopenta[a]pentalene-2-carboxylic acid 
• 84694-09-7 (2R,3aS,3bS,6aR,7aR)-4,4-Dichloro-2,3b-dimethyl-5-oxo-decahydro-cyclopenta[a]pentalene-2-carboxylic acid methyl ester 

Downstream Products

• 55123-33-6 dl-hirsutic acid C 

Relevant academic research and scientific papers

Iterative Three-Carbon Annelation. A Stereoselective Total Synthesis of (+/-)-Hirsutic Acid C

Iterative olefin annelation has been used for the synthesis of hirsutic acid C, a linearly fused tricyclopentanoid fungal metabolite from Stereum hirsutum and Stereum complicatum.

Total Syntheses of Hirsutic Acid C and Complicatic Acid

The linearly fused tricyclopentanoids hirsutic acid C(1) and complicatic acid (2) were synthesized from the methanoindene 12 in a highly stereoselective manner.