PATENT CLAIM ANALYSIS

Application Number: 15749377
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["546", "152000"]

Abstract:
Production of pitavastatin calcium safely on an industrial scale with a high yield and high selectivity at low cost. A method of producing pitavastatin calcium including step (i) for acetalizing a compound represented by the formula (1) to give a compound represented by the formula (3), step (ii) for reacting a compound represented by the formula (3) with an acid to give a compound represented by the formula (4), and step (iii) for hydrolyzing a compound represented by the formula (4) and reacting same with a calcium compound.

Claim (Index 1):
A method for producing pitavastatin calcium comprising\n (i) a step of acetalizing a compound represented by the following formula (1): wherein R is a straight chain alkyl group having a carbon number of 1-8 or a branched alkyl group having a carbon number of 3-8 and X is an acid, to give a compound represented by the following formula (3): wherein R 3  and R are each independently an alkyl group having a carbon number of 1-4 and R is as defined above;\n (ii) a step of reacting said compound represented by the formula (3) with an acid to give a compound represented by the following formula (4): \n wherein R is as defined above; and\n (iii) a step of hydrolyzing said compound represented by the formula (4) and reacting the compound with a calcium compound to give pitavastatin calcium.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 86.0
- Lexical Diversity: 2.34783
- Patent Class: 546.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15600196', '11666905', '15116861', '10553394', '13510375']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7739173704853889
- 35 USC 102 Novelty (BERT): 0.4974223281762767
- Combined Prediction Score: 0.7462678662544777
- Mean Citation Score: 246.087964
- Max Citation Score: 269.67303
- Similarity Product: 208.91210811082004

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test